As the pitching market turns…

The Marlins and Blue Jays are the teams most aggressively pursuing trades for starting pitchers, according to major-league sources.

The Marlins also were meeting with free-agent left-hander Mark Buerhle on Tuesday, but the competition to sign Buehrle is intense, sources say.

Three big-money AL clubs - the Yankees, Red Sox and Rangers – are among the teams said to be interested in Buehrle.

As for the Jays, their pursuits of both starters and relievers is standard operating procedure for general manager Alex Anthopoulos.

“Alex is always looking for everything,” one rival GM said. “He is the only GM in the league with a 60-man roster – and I say that as a compliment.

“You can’t pin him down. He has interest in every one of your players.”

The starting pitchers who are known or thought to be available in trades include:

*Rays right-handers James Shields and Wade Davis.

*Athletics lefty Gio Gonzalez and righty Trevor Cahill.

*Braves righty Jair Jurrjens.

*White Sox lefty John Danks and righty Gavin Floyd.

*Cubs righty Carlos Zambrano.

*Dodgers righty Chad Billingsley.

*Astros lefty Wandy Rodriguez.

The availability of Rodriguez will become clearer if Jim Crane is approved as owner at the owners’ meetings next week in Milwaukee.

Crane is willing to move Rodriguez, sources say. Drayton McLane, who would remain owner if the deal fell apart, is more reluctant to make a deal.

— Ken Rosenthal and Jon Paul Morosi