Suarez (back) allowed one run on four hits and two walks while striking out eight in 4.2 innings during his rehab start Sunday with Triple-A Lehigh Valley.
The left-hander threw 78 pitches in the rehab start, his fourth since beginning his minor-league assignment April 10. Suarez looks like he could be ready to return from the 15-day injured list to make his next start in the big leagues, but the uncertain status of Cristopher Sanchez (forearm) -- who is considered day-to-day -- creates some uncertainty about when Suarez might be called upon to pitch for the Phillies.