Predictions

Season 21:
TCEC Leagues Season 21
These are the TCEC chatters who have staked 250 000 trollbits (the maximum) on at least one game during the league season:

masterkni6, naphtha42, mrbdzz, leela_is_the_goddess, heyimBigo, BelgradeGambit, drspod, Viren6, digretion, 1coghoti, SF_is_a_GOD, Lolligerhans, RobbyRobbyRob, imelbook, creyzamo, BumfluffBob, Wolfgang_de_Cauter, kanchess, Linisten, opinternet, Remnant_of_Fishcooking, tracycage, vujazzman, linilly, quackquackblah, windfishballad, Jeydra, cookie_monster_71, kiudee, wissam512, platyhelminth, MandelSet, FirebrandX, coolconqueror, frodi6768.

These are the TCEC chatters who have lost 250K for the greater good. Numbers behind their name indicate how often they have done so:

heyimBigo (2x), mrbdzz (8x), imelbook, BelgradeGambit (7x), leela_is_the_goddess, kanchess (4x), SF_is_a_GOD (3x), opinternet, tracycage, windfishballad (3x), drspod (3x), cookie_monster_71, kiudee, quackquackblah (6x) , vujazzman (3x), linilly, platyhelminth, MandelSet, FirebrandX, naphtha42 (2x), 1coghoti, frodi6768.

TCEC Cup 9
These are the TCEC chatters who have staked 250 000 trollbits (the maximum) on at least one game in Cup 9:

ddarthez, mrbdzz, thecoal_baker, wissam512, kittenkaboodle, coolconqueroriii, RobbyRobbyRob, heyimBigo, jjlai1111, digretion, BelgradeGambit, ChessEAlly, 1coghoti.

These are the TCEC chatters who have lost 250K for the greater good. Numbers behind their name indicate how often they have done so:

mrbdzz (1x), heyimBigo (1x), BelgradeGambit (1x), thecoal_baker (1x), kittenkaboodle (1x), 1coghoti (1x).

TCEC Swiss 2
These are the TCEC chatters who have staked 250 000 trollbits (the maximum) on at least one game in Swiss 2:

ChessEAlly, Archstro, masterkni6, mrbdzz, coolconqueroriii, RobbyRobbyRob, ddarthez, thecoal_baker, quackquackblah, jjlai1111, gmmds27, Lolligerhans, polotovarman, AlcyonEldara, linilly

These are the TCEC chatters who have lost 250K for the greater good. Numbers behind their name indicate how often they have done so:

ddarthez (1x), thecoal_baker (1x), mrbdzz (2x), Archstro (1x), gmmds27 (2x), quackquackblah (1x), jjlai1111 (2x), coolconqueroriii (1x), AlcyonEldara (1x), 1coghoti (1x)

TCEC FRC 4
These are the TCEC chatters who have staked 250 000 trollbits (the maximum) on at least one game in FRC4: Archstro, heyimBigo, kanchess, linilly, mrbdzz, polotovarman, quackquackblah, thecoal_baker

These are the TCEC chatters who have lost 250K for the greater good. Numbers behind their name indicate how often they have done so:
polotovarman (1x), kanchess (1x), Archstro (1x), linilly (1x), heyimBigo (1x), mrbdzz (1x), thecoal_baker (1x)

These are the chatters who have achieved the heroic grand slam of losing at least one 250k bet in each of the main events of Season 21:
mrbdzz