Should Herrera have been shown red for RSL? | Instant Replay's Andrew Wiebe and Bobby Warshaw break down the most controversial plays of the second night of Knockout Round games of the Audi 2018 Cup Playoffs.

LIVE YOUR COLORS: Download the free MLS app - The official MLS app gets a major update for 2019, making it easier than ever to keep up with your favorite club, check standings, watch videos and much more.