MELBOURNE, Fla. (AP) _ Marlins right-hander Chuck Smith, projected as Florida's No. 3 starter, hurt his throwing shoulder while running the bases Saturday in a 12-9 loss to the Montreal Expos.

Smith led off the second inning with an infield single and eventually made it to third. He scored easily on Mark Kotsay's sacrifice fly, but stumbled crossing the plate and got up holding his right shoulder.

He was taken to Holy Cross Medical Center in Fort Lauderdale for tests.

''(The doctor) told me he thought it was just a sprain,'' Marlins manager John Boles said. ``Right now it's anyone's guess as to what it is until we hear the results of the MRI. It's safe to say I won't use Chuck Smith as a pinch-runner this season.''

Before the outing, Smith had allowed four hits and a run in seven innings this spring. He gave up four hits and three runs Saturday.

Terry Jones went 3-for-4 and scored twice, and Vladimir Guerrero had two hits and two RBIs for the Expos.

Chris Peters got the win despite giving up 12 hits and six earned runs in 4 2-3 innings.

Kevin Millar had four hits and Charles Johnson had three for the Marlins.