The Portland Timbers are set to host the Houston Dynamo Sunday in the second leg of the Audi 2017 MLS Cup Playoffs Western Conference Semifinals (4:30pm PT, FS1) but before the game gets going, check out the special livestream of the Playoff Central Pregame show beginning at 11:30am PT. experts will take a look at each of the matches of the day and be joined by our very own Thorns FC defender Meghan Klingenberg in studio alongside recently retired Montréal Impact midfielder Patrice Bernier.