The Phillies opened the season against the Washington Nationals at home on March 31.
They failed to win any of their first three series, losing two of three against the Nationals and New York Mets, with a four-game split against the Cincinnati Reds between those series.
The Phillies won their next two series against the Chicago Cubs and the Houston Astros.
After dropping a second series to the Mets, the Phillies finished the month with 15 wins and 12 losses.
They did not achieve a three-game sweep against any team in the opening month, nor were they swept.
By winning at least one game in each series, the Phillies were able to achieve their first winning April in several seasons, and only their fourth since their last World Series appearance in 1993.

With a batting average of .360 and his Major League Baseball-leading 11 home runs, Chase Utley paced the team's offense, followed closely by a resurgent Pat Burrell and his 25 runs batted in.
Though team speed was hampered by the loss of Shane Victorino and Jimmy Rollins to the disabled list, the latter for the first time in his career, the Phillies still pushed forward to a 15–13 record, including their Opening Day loss to Washington.
The pitching rotation was led by ace Cole Hamels, who led the team in wins (3), earned run average (ERA) (2.70), and innings pitched (​43 ¹⁄₃).
Reliever J. C. Romero and new closer Brad Lidge both went the entire month without sacrificing a single run, over ​12 ¹⁄₃ and 11 innings respectively.
The Phillies opened the season against the Washington Nationals at home on March 31. They failed to win any of their first three series, losing two of three against the Nationals and New York Mets, with a four-game split against the Cincinnati Reds between those series. The Phillies won their next two series against the Chicago Cubs and the Houston Astros. After dropping a second series to the Mets, the Phillies finished the month with 15 wins and 12 losses. They did not achieve a three-game sweep against any team in the opening month, nor were they swept. By winning at least one game in each series, the Phillies were able to achieve their first winning April in several seasons, and only their fourth since their last World Series appearance in 1993.
With a batting average of .360 and his Major League Baseball-leading 11 home runs, Chase Utley paced the team's offense, followed closely by a resurgent Pat Burrell and his 25 runs batted in. Though team speed was hampered by the loss of Shane Victorino and Jimmy Rollins to the disabled list, the latter for the first time in his career, the Phillies still pushed forward to a 15–13 record, including their Opening Day loss to Washington. The pitching rotation was led by ace Cole Hamels, who led the team in wins (3), earned run average (ERA) (2.70), and innings pitched (​43 ¹⁄₃). Reliever J. C. Romero and new closer Brad Lidge both went the entire month without sacrificing a single run, over ​12 ¹⁄₃ and 11 innings respectively.
2008 Philadelphia Phillies season