虽然底下推文有人解答了，但没什么人注意到这篇
又看讨论好像还是很多人不太清楚选边规则
英文
6.1.2.2.2. Rounds Two through Five. The right of side selection for the first
Game in each match in Rounds Two through Five will be granted to the team from
the higher draw pool. For these matches, side selection will be due at 10:00
pm local time, or an hour after the conclusion of the final game, whichever is
later, on the day before the match. In the case where both teams are from the
same draw pool, the right of side selection will be determined by coin flip (
or other equivalent method) immediately following the draw. If the right of
side selection was determined by coinflip, a teams side selection will be due
at the time of the coinflip.
简中+Google翻译
6.1.2.2.2.
第二轮到第五轮。第二轮到第五轮每场比赛第一局游戏的选边权将给予来自排名较高的抽
签池的队伍。对于这些比赛，选边将在比赛前一天的当地时间下午10:00或当日最后一场
比赛结束后的一小时截止，两者以时间较迟一方为准。如果两队来自同一个抽签池，那么
选边权将在抽签后立即通过掷硬币的方式（或者其它类似的方式）决定。如果选边权是透
过掷硬币决定的，那么队伍的选边需要在掷硬币时决定。
以今天抽出来的结果来看
HLE vs GEN → Pool 1>2 HLE选
DK vs LNG → Pool 3=3 硬币或类似方式
BLG vs T1 → Pool 1>3 BLG选
PSG vs FLY → Pool 1>4 FLY选
TES vs FNC → Pool 2=2 硬币或类似方式
WBG vs G2 → Pool 1>3 G2选
PNG vs TL → Pool 2>4 TL选
MDK vs GAM → Pool 4=4 硬币或类似方式
按照规章大概是这样
如果规章有改的话再告诉我...