Major League Baseball has three Most Valuable Player Awards in the postseason: one for each League Championship Series and the other for the World Series. In each of these cases, the award is presented to the player "deemed to have the most impact on his team's performance in the series." A committee of reporters and officials at the game select the winners. 
The World Series MVP has been presented annually since 1955. The National League Championship Series MVP was first presented in 1977 with the American League Championship Series starting in 1980. Here are some Phillies to have earned the honor:
Manny Trillo, 1980 NLCS
Trillo was selected following the Phillies gut-wrenching playoff win against Houston. After going 3-for-12 in the first three games, he went 5-for-9 with four RBIs over the final two games -- both won by the Phillies. In the 8-7,10-inning Game 5 win, which clinched the series, he threw out a runner at home plate in the second inning and tripled in two runs in the eighth giving the Phillies a 7-5 lead.
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Mike Schmidt, 1980 WS
Schmidt won the award after the Phillies defeated the Kansas City Royals for their first world championship. He batted .381 (8-for-21) with six runs scored, one double, two home runs, four walks and a team-leading seven RBIs as he recorded a hit in each game of the series. He started a two-run, game-winning rally with a single in leading off the ninth in Game 5. In the 4-1, Game 6 clincher, he opened the Phillies' scoring with a two-run single in the third inning.
Gary Matthews, 1983 NLCS
"The Sarge" almost single-handedly eliminated the Los Angeles Dodgers in a four-game series. His solo homer was the lone run in a Game 2 loss that tied the series, 1-1. Then in Game 3, he drove in four runs on a homer and two run-producing singles. He delivered a three-run homer in the first inning of the Game 4 clincher, a game the Phillies won, 7-2. His numbers: .429 (6-for-14), three homers and eight RBIs.
Curt Schilling, 1993 NLCS
Starting Game 1 against the heavily-favored Atlanta Braves, he struck out the first five batters, an NLCS record at the time. The Phillies won, 4-3, in 10 innings and had the same result in Game 5, his second start. While he was winless in those two starts, he finished with a 1.69 ERA. In 16 innings, he allowed 11 hits, four runs (three earned), walked five and struck out 19.
Cole Hamels, 2008 NLCS and WS
Hamels became the fifth player to win both honors in the same year. If the Division Series had a MVP, he might have had a trifecta as he won the first game of the NLDS, NLCS and WS. With eight shutout innings (two hits, nine strikeouts), he was the winner over Milwaukee to open the NLDS. He won the NLCS Game 1 (3-2) and the clinching Game 5 (5-1) as the Phillies eliminated the Dodgers in Los Angeles. Seven days later, he was a 3-2 winner in Game 1 of the World Series in St. Petersburg, Fla. He returned to start Game 5, working six innings before heavy rains suspended play with the score tied, 2-2. In five playoff starts that season, he was 4-0 with a 1.80 ERA, setting club records for the most wins (4), innings (35.0), strikeouts (30) and starts (5) in a single postseason.
Ryan Howard, 2009 NLCS
A two-run double by Howard capped a five-run fifth inning in Game 1 against the Dodgers and pinned an 8-6 loss on Clayton Kershaw. He drove in two runs with a triple in Game 3 and followed with a two-run homer in the first inning of Game 4. When the Phillies closed out the NLCS with a romp in Game 5, Howard was hitless in two at-bats, but walked twice and scored a run. He finished with a .333 average (5-for-15), five runs, eight RBIs, and six walks. His five hits were a single, double, triple and two homers.