Tampa Bay (65-69) will be going for the series win when they visit Nationals Park on Sunday afternoon to face Washington (53-81) in the final game of their three-game interleague series at 3:05 PM. Et. Read on to find out which team picks up the win in this Rays vs. Nationals prediction and get more Free MLB Picks. Ryan Pepiot, 9-10, 3.82 ERA, will get the start for the Rays. The Nationals will counter with Jake Irvin, 8-9, 5.40 ERA. Tampa Bay is 6-4 in its last 10 games against Washington.