The World Series is underway, and that means free agency is drawing ever closer.

The postseason provides an additional platform for the biggest names to showcase themselves to prospective suitors ahead of the offseason.

Here are five players whose playoff performance boosted their stock.

Adam Wainwright, Cardinals SP

By now, Wainwright's a St. Louis icon, and he added one more chapter to his story this October with a remarkable playoff performance. The 37-year-old's start in Game 3 of the NLDS was a classic - a 120-pitch, four-hit gem over 7 2/3 innings - even if he didn't come away with the win. And he certainly wasn't the Cardinals' problem in the NLCS, when he nearly matched Max Scherzer in a Game 2 loss. It would certainly be weird to see Wainwright wear a different uniform, but the playoffs proved he's got something left in the tank. If he doesn't want to leave St. Louis, then his postseason work earned him another year with the Cardinals at the very least.

Gerrit Cole, Astros SP

It's getting hard to find new praise for Cole. If his 300-strikeout regular season and possible Cy Young Award weren't enticing enough, Cole has taken it to a new level in the playoffs, where he's been virtually unbeatable. Even in his start in Game 3 of the ALCS, where he worked around a little bit of trouble, and his loss in Game 1 of the World Series on Tuesday, Cole has been on a different level. He was always going to get paid in a big way this winter, but this playoff run will add several more zeroes to his next contract.