Williams (elbow) is on track to return from the 60-day injured list this weekend versus the Cubs, Mark Zuckerman of MASNSports.com reports.
Williams allowed two runs over 7.1 innings in two rehab starts with Double-A Harrisburg, throwing 73 pitches in his most recent outing Sunday. He should be lined up to start Friday in Chicago, although the exact date for his return hasn't been revealed yet. Williams has been sidelined since late May with a right flexor strain. He had collected a 2.22 ERA, 1.08 WHIP and 47:16 K:BB through 56.2 innings before getting injured.