Pedro Martinez says his agent is negotiating with the Philadelphia Phillies, trying to get the pitcher back into the major leagues.
Martinez said the Phillies have been scouting him in his native Dominican Republic.
"The Phillies saw me this past Tuesday in a simulated game and I felt very good with my fastball and all my pitches," Martinez said Thursday.
Phillies general manager Ruben Amaro Jr. denied reports a deal was done, but confirmed the team's interest in the three-time AL Cy Young Award winner.
"He has not been signed," Amaro said before the NL East-leading Phillies played Cincinnati on Thursday night. "We've seen him pitch. He's not in town."
The 37-year-old Martinez is reported to have worked three innings in a simulated game against a Phillies summer league team, with his fastball clocked at up to 93 mph.
"I feel the best I have for some time," Martinez said.
The eight-time All-Star said it was up to his agent and the defending World Series champion Phillies to wrap up contract details.
Martinez went 5-6 with a 5.61 ERA for the New York Mets last year. The free agent pitched in the World Baseball Classic before this season started.
The Phillies have been hurt by injuries to their starting rotation. No. 2 starter Brett Myers had hip surgery in June and his replacement, Antonio Bastardo, landed on the disabled list after making five starts. Philadelphia already has used nine starters through 82 games. The Phillies used only seven starters last season.