By Michael Donovan

The surprising Phillies will find out just how good they really are this weekend when they start a three-game series tomorrow against the MLB-best (31-14) Chicago Cubs.

The Phillies open a three-game series at Wrigley Field with Adam Morgan (1-2, 5.61 ERA) taking the mound against Cubs left-hander Jon Lester (4-3, 2.60 ERA).

Morgan gave up two runs in six innings in his last start against the Braves, a bounce-back performance after giving up seven earned runs on eight hits against the Reds in the outing before that. He’s faced the Cubs only once in his career, losing to them last season after allowing four runs on seven hits over five innings.

Lester will look to have a similar type of comeback outing after he got rocked for five earned runs in 2 2/3 innings at San Francisco last Saturday. He is 4-0 lifetime against Philly, with a 1.76 ERA and a 0.93 WHIP.