Soccer analyst Ross Smith joins play-by-play man Jake Zivin with the first of three episodes of The Buildup this week. Is Saturday's Audi 2021 MLS Cup Playoffs Western Conference Final between the Portland Timbers and Real Salt Lake the biggest game in Providence Park history? Ross and Jake talk about THAT Tuesday's result in the Eastern Conference between NYCFC and New England, as well as the potential lineup changes we'll see for the Timbers against RSL.