Lively is the most likely candidate to join the Phillies' rotation this week, Todd Zolecki of MLB.com reports.
Zach Eflin was optioned to Triple-A Lehigh Valley after a poor outing Sunday, perhaps creating an opening for Lively, who has gone 6-1 with a 2.40 ERA and a 45:7 K:BB in 56.1 innings for Lehigh Valley this season. The 25-year-old works in the low-90s with his fastball and relies on pitching down in the zone to induce weak contact from hitters. If he gets the call, his first start will likely come Saturday at home against the Giants.