PHILADELPHIA — Pedro Martinez promised to put on quite a show when he returns to the majors with the Philadelphia Phillies.

The NL East leaders are hoping it will be a vintage performance.

Martinez finalized a $1 million, one-year contract with the Phillies on Wednesday, and can earn up to $1.5 million in incentives. The three-time Cy Young Award winner hasn’t pitched since last season and won only eight games in 25 starts over his final two seasons with the Mets.

‘‘I might surprise you, I might not,’’ Martinez said. ‘‘It’s going to be really fun to go find out.’’

The Phillies are hoping Martinez has enough left to help them repeat as World Series champions.