Kendrick tries for a fourth straight win Tuesday night while looking to help the Phillies to a second consecutive victory over the streaky Giants.
That kicked off a seven-game trip for the Phillies after they had lost four of six, including 14-2 to lowly Miami on Sunday. They hope Monday's performance could be the start of something positive.
"That's more of what we are right there, no doubt," Lee said. "We definitely haven't been playing up to our potential. We've been far short of that, to be honest with you. I think (Monday) is more of a real depiction of what we are.
"I expect us to pick it up a little bit. We underperformed this first month, and it's time for us to turn it on. Tonight was a good start in that direction."
Lee is 3-2 with a 3.26 ERA and the only one of the Phillies' star trio along with Roy Halladay and Cole Hamels - a combined 3-8 with a 6.19 ERA - to boast a winning record. Halladay was placed on the disabled list Monday with a shoulder injury.
Kendrick (3-1, 2.43 ERA), meanwhile, has been Philadelphia's most consistent starter. The team is 4-2 in games he's started.
The right-hander has yielded six runs - four on homers - in 35 innings to go 3-0 in his past five starts. Kendrick tossed a three-hit shutout against the New York Mets on April 26, then beat the Marlins on Thursday when he allowed two runs in seven innings of a 7-2 win.
"I've always kind of expected this," the seven-year veteran said. "It hasn't always been there. Hopefully now I can be consistent every time out. I feel comfortable and confident I can do that."
Kendrick pitched 4 1-3 scoreless innings of relief versus San Francisco last season, but he's 0-1 with a 4.38 ERA in two starts against the Giants.
Young, who entered Monday in a 3-for-19 slump, is batting .333 both at home and on the road.
The only time he faced scheduled San Francisco starter Tim Lincecum (2-1, 4.41) came in the 2010 World Series while with Texas, going 1 for 6. Lincecum went 1-1 in three games versus the Phillies in the NL championship series that year, but he's since gone 3-1 in four regular-season starts against them with a 2.70 ERA.
Lincecum, however, is coming off arguably his worst effort of the season, giving up five runs and 10 hits in five innings Wednesday before the Giants rallied for a 9-6 win at Arizona.
"I could have done better hitting some spots," the right-hander said. "Balls were falling in here in there that I didn't like, but if I execute pitches and keep them down in the zone better, I'll fare better next time out."
Ex-Phillie Hunter Pence homered and had three of the five hits Monday for the Giants (19-13), whose last three weeks have included win streaks of six and four games as well as losing streaks of five and three.
Pence, traded from Philadelphia to San Francisco in July, is 10 for 20 with two homers and six RBIs in five games this month. He's batting .480 in the last six at AT&T Park.