The Phillies have lost 11 of their last 14 games and will be looking to avoid getting swept for the fourth time this season.
"It's really tough to go through this right now," closer Tom Gordon said. "We're definitely a better ballclub than we've shown the last month. It's tough to go through this because we're definitely a team that can be very aggressive. Why we're going through this is a mystery to all of us in the clubhouse."
Lidle's outings have become predictably steady, as he's pitched fewer than five innings only once this season and hasn't pitched more than seven.
In his May 10 win over Boston, Lidle allowed three runs and five hits with six strikeouts over six innings.
In his last start, the right-hander gave up four runs and eight hits in a no-decision against the Yankees.
Lidle is 1-1 with a 3.60 ERA on the road this year. He's 2-2 with a 6.46 ERA in his career against Boston and 1-0 with a 4.66 ERA in three career starts at Fenway.
Losers of four straight, the Phillies are 3-8 against the American League this year, while the Red Sox are 10-1 in Interleague Play.
PHI: RHP Cory Lidle (4-6, 5.00 ERA)
The ERA is appropriate for Lidle, who's been far from a zero but also far from a perfect 10. Lidle hasn't won since May 21, also against the Red Sox.
BOS: RHP Tim Wakefield (5-8, 3.82 ERA)
Wakefield, who continued his stellar pitching at Fenway Park, was finally given some run support and was rewarded with a win in his last outing against Washington.
Player to watch
Center fielder Aaron Rowand seems to be one of the few players who has figured out the knuckleball. Rowand is batting .714 (10-for-14) with four home runs against Wakefield in his career.
On the Internet
Official game notes
Comcast SportsNet (CSN)
WPHT 1210AM (Español)
Tuesday: Phillies (LHP Cole Hamels, 1-3, 4.41) at Orioles (LHP Erik Bedard, 7-6, 5.09), 7:05 p.m. ET
Wednesday: Phillies (RHP Scott Mathieson, 0-1, 4.22) at Orioles (RHP Kris Benson, 8-5, 4.06), 7:05 p.m. ET
Thursday: Phillies (RHP Brett Myers, 5-3, 3.86) at Orioles (RHP Rodrigo Lopez, 5-8, 6.45), 7:05 p.m. ET