Cardnum Public Tournament Rankings

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Theo
Posts: 1393
Joined: Mon Jan 08, 2018 5:49 pm
Location: Denver, CO

It is a bit silly to track rankings across tournaments when each has been a different format, but nevertheless I've been maintaining one. I figured I'd share with a mind to encourage players to set up impromptu "cold-call" games, if it helps to relate to others that might have had similar tournament experiences, or maybe just to set expectations of what they might be getting themselves into!

These numbers are based on the seasonal "Middle-earth CCG Official Ranking System by Chraig 'Ichabod' O'Brien, for I.C.E.", put in a code block below (up to 32 players). I've seen another version that is more like ELO, but this one makes a little more sense to me for the purpose of tracking for (hypothetical) event qualifications.

I'm showing the differences from 500 Ranking Points (RP) in the first two columns below, followed by individual tournament contributions. Without a regular yearly timeline, I replace Ichabod's 0.2x (or 0x for negatives) multipliers per season with a "decayed" RP calculation. After each tournament, I add the points of that tournament to the ranking points from after the previous tournament reduced by a fraction for each month that elapsed between. With our sparser schedule, I use a 4 year rather than 1 year timescale, so 0.2x (or 0.01x for negative sums) for every 48 months.

If I missed collapsing someone's real name and forum, discord, or cardnum username, let me know.

Code: Select all

			Decayed		Net		2022Jul		2021Nov		2021Jul		2020Nov		2020Aug
player			RP Change	RP Change	AESC		METD		METW		sealed		GO
Shapeshifter		43		62		11		12		24		1		14
Theo			41		52		27		6		0		11		8
Adamj			20		20		20								
Gaereth Barethson	15		25		2		5		2		16		
Celith			15		16		0		19		4		-7		
Nimrandir		10		13		4				9				
maxocub			8		8		8								
CDavis7M		5		11						-7		25		-7
DamienX207		5		8		2						6		
langloude		4		-1		1		0		9		-11		
Shadowandflame		3		6								0		6
Vastor			3		5								4		1
Ernst Brun		1		2								2		
Grishnakh		0		0						0				
Moriquendi		0		0		0								
J Montanus		0		-2								-2		
Bergil			0		5		-11				16				
Lexicon			-1		-9										-9
dirhaval		-1		-12										-12
G Giewon		-1		-9								-9		
ForgeFrance		-2		-12								-12		
Ryan Roper		-2		-12								-12		
Shark			-2		-12								-12		
LordJesse		-3		-10						-10				
buscouille		-3		-11						-11				
aleaax			-4		-9				-7		-2				
rezwits			-4		-13						-12				-1
Saurn118		-5		-5		-5								
Quixote			-6		-12				-12						
kepler_euler		-11		-11		-11								
sfakattack		-12		-12		-12								
sarma72			-13		-28		-8		0		-10		-10		
Trotter			-18		-24		-12		-12		0				
Sulimo			-23		-38		-14		-11		-13				

Code: Select all

Middle-earth CCG Official Ranking System

 by Chraig 'Ichabod' O'Brien, for I.C.E.


The System
Winning / losing
Each win gives a player +1 ranking point (RP), each loss -1 RP
No ranking points are won or lost on draws or byes


The pool
At the start of the tournament each player donates 10 ranking points to the pool.

At the end of the tournament the points in the pool are distributed according to the table at the next sheet, based on each players final standing

All final standings are important, so try to break all ties using the tie braking rules

Dropouts do not get ranking points from the pool (as they do not achieve a final standing); this may cause some RP's to be lost (not redistributed)


First ranking
The first time a player is ranked he / she starts with 500 points, plus 20% of his / her points over 500 (if any) in the final ranking of the previous season

Only points over 500 are taken into account, a player never starts a season at less than 500 points

After the first ranking the changes in RP's are added to the players previous RP total

Examples
Alex played in a 15 player tournament and ended up 2nd with 3 wins and one loss. His previous ranking is 521. His new ranking is: 521 + 3 - 1 - 10 + 24 = 537 (previous ranking + wins - losses -10 RP's for the pool + 24 RP's for 2nd place in a 15 player tournament (from the table) = 537)

Eve played in a 23 player tournament, she won twice and lost twice and ended up in 14th place. She has not been ranked yet this season. Last season her final ranking was 486. Her new ranking is: 500 + 2 - 2 - 10 + 10 = 500

Phil played in a 10 player tournament. He won the first round but lost the second and dropped out after that. His previous ranking is 495. His new ranking: 495 + 1 - 1 - 10 + 0 = 485

Note that Phil does not get a final standing and therefore no RP's from the pool, even though he might have more tournament points then the players ending in 8th and 9th place. Phil may have dropped out, but the tournament is still ranked as a ten player tournament

Olivia played in a 26 player tournament, she won three times, lost twice and ended up in 5th place. She has not yet been ranked this season. Her final ranking last season was 526. Her new ranking: 500 + 5 + 3 - 2 - 10 + 16 = 512

# players
	point pool	1st	2nd	3rd	4th	5th		6th	7th	8th	9th	10th		11th	12th	13th	14th	15th		16th	17th	18th	19th	20th		21st	22nd	23rd	24th	25th		26th	27th	28th	29th	30th		31st	32nd
2	20		10	10																																				
3	30		13	11	6																																			
4	40		16	13	7	4																																		
5	50		20	14	10	6	0																																	
																																								
6	60		21	15	10	10	4		0																															
7	70		22	17	13	10	6		2	0																														
8	80		23	17	13	10	10		5	2	0																													
9	90		24	19	15	12	10		6	3	1	0																												
10	100		25	20	16	13	10		10	5	1	0	0																											
																																								
11	110		26	20	16	13	11		10	8	5	1	0		0																									
12	120		27	22	17	13	11		10	10	6	3	1		0	0																								
13	130		29	23	18	14	12		11	10	7	3	2		1	0	0																							
14	140		30	24	19	15	12		11	10	10	4	3		1	1	0	0																						
15	150		30	24	19	15	12		11	10	10	10	5		3	1	0	0	0																					
																																								
16	160		31	24	19	15	12		11	10	10	10	10		5	2	1	0	0		0																			
17	170		31	25	20	16	13		11	11	10	10	10		6	4	2	1	0		0	0																		
18	180		32	26	21	17	14		11	11	10	10	10		10	4	2	1	1		0	0	0																	
19	190		32	26	21	17	14		12	11	11	10	10		10	6	4	3	2		1	0	0	0																
20	200		33	26	21	17	14		12	11	11	10	10		10	10	7	4	3		1	0	0	0	0															
																																								
21	210		33	27	22	18	15		13	12	11	10	10		10	10	10	4	3		1	1	0	0	0		0													
22	220		33	27	22	18	15		13	12	11	11	10		10	10	10	6	5		4	2	1	0	0		0	0												
23	230		34	27	22	18	15		13	12	11	11	10		10	10	10	10	6		5	3	2	1	0		0	0	0											
24	240		34	28	23	19	16		14	13	12	11	11		10	10	10	10	7		5	3	2	1	1		0	0	0	0										
25	250		34	28	23	19	16		14	13	12	11	11		10	10	10	10	10		8	5	3	2	1		0	0	0	0	0									
																																								
26	260		35	28	23	19	16		14	13	12	11	11		10	10	10	10	10		10	8	4	3	2		1	0	0	0	0		0							
27	270		35	29	24	20	17		15	14	13	12	11		11	10	10	10	10		10	8	4	3	2		1	1	0	0	0		0	0						
28	280		35	29	24	20	17		15	14	13	12	11		11	10	10	10	10		10	10	8	4	3		2	1	1	0	0		0	0	0					
29	290		36	29	24	20	17		15	14	13	12	11		11	11	10	10	10		10	10	9	6	5		3	2	1	1	0		0	0	0	0				
30	300		36	30	25	21	18		16	15	14	13	12		11	11	10	10	10		10	10	10	6	5		3	2	1	1	0		0	0	0	0	0			
																																								
31	310		36	30	25	21	18		16	15	14	13	12		11	11	10	10	10		10	10	10	10	7		4	3	2	1	1		0	0	0	0	0		0	
32	320		37	30	25	21	19		16	15	14	13	12		11	11	11	10	10		10	10	10	10	8		6	4	3	2	1		1	0	0	0	0		0	0
Last edited by Theo on Tue Oct 11, 2022 5:03 am, edited 5 times in total.
One [online community] with hammer and chisel might mar more than they make...
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sarma72
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I should be half way in this ranking just for having organised one such tournament! Just joking but still why am I at the very bottom here? I didn't finish last in the last sealed and METW-only events. More like half way and nearly last.
“The wide world is all about you: you can fence yourselves in, but you cannot forever fence it out.”
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Theo
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I stuck a code block with the ranking system above (shortened to 32 max players... I'd love to expand it though!).

Short version: participants get -10 for entering an event which are put in a pool, get +1 or -1 for each game won or lost, and get points back from the pool based on how they placed. In general, the top placement get a big bonus, and the last square root or so of players get almost nothing from the pool. Players that drop out get nothing back from the pool; this is the repayment for your kindness in keeping the numbers even this last event. :|
One [online community] with hammer and chisel might mar more than they make...
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sarma72
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"Players that drop out get nothing back from the pool; this is the repayment for your kindness in keeping the numbers even this last event."

Ah ah ok I see. Next time I'll distribute byes mercilessly
“The wide world is all about you: you can fence yourselves in, but you cannot forever fence it out.”
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Shapeshifter
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Nice idea, Theo, to revive this ICE era tournament ranking system.

re: drop outs. I think the system is right in not rewarding people who drop out. In case of somebody being so kind to drop out just to keep numbers even the system should be reassessed, though.
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CDavis7M
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sarma72 wrote: Mon Aug 02, 2021 11:56 am Ah ah ok I see. Next time I'll distribute byes mercilessly
Brutal but necessary [-me_eye-] [-me_eye-]
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Theo
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Updated with results of METD tournament.

Changed to sorting principally by a weighted sum of tournament contributions to simulate the seasonal decay in Ichabod's description. This has the effect of making contributions worth 0.2x for every 7 tournaments that happened more recently while maintaining a positive sum, or less than 0.01 while maintaining a negative sum.
One [online community] with hammer and chisel might mar more than they make...
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Theo
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I updated the rankings with the All-Expansion Sealed Collection tournament from the summer.

I (yet again) changed the principal sorting to use a month timescale rather than tournament timescale, details above. They feel pretty equivalent to me, but I figured this would be more sensitive to skills being developed (or stagnating) outside of tournament play, which I would hope (regret) is occurring!

As I continue to gather more data, I become increasingly skeptical of the appropriateness of using this for things like qualifying for hypothetical special events. I can see how this being implemented among independent regions for the purpose of culling the best of each region would be sensible, but when these events are already open to players regardless of region I think the high skew of points toward the top places doesn't allow for proper distinguishing among the rest. So I'll be going back and trying another idea when I have a moment, essentially based on TP standard deviations. (I haven't yet chosen how to handle players that drop out.) Or send any ideas my way.
One [online community] with hammer and chisel might mar more than they make...
All players are welcome at Meduseld! https://theo-donly.github.io/MECCG/
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