Marquez has never faced the Phillies. He has won his last two starts, allowing one run on seven hits over 13 innings. He did need 101 pitches to get through five innings last time out.
Eflin suffered his worst start of the season Wednesday in Texas, allowing 11 hits and seven runs in four innings against Texas. He had posted a 2.81 ERA in his first five starts, getting plenty of weak contact on his two-seam fastball.