With the MLB Off-Season underway, many teams are looking to upgrade, find replacements, and make major renovations to their clubs. TSN.ca looks at the day's hottest off-season rumors and speculations.

White Sox want pitching

Add the Chicago White Sox to the list of teams pursuing closer David Robertson.

Along with their interest in Jeff Samardzija, the White Sox are looking to shore up a bullpen that posted a 4.38 ERA, bad enough for the third-highest in baseball.

Chicago’s first round pick is protected, so the team would give away its second round selection as compensation if they sign Robertson. He rejected the New York Yankees’ qualifying offer earlier this off-season.

It has been reported that Robertson is looking for a contract around four years and $50 million. Despite being the top closer on the free agent market, teams have been reluctant to offer big money to a reliever.

Other teams in the mix for Robertson are the Yankees, Houston Astros and the Toronto Blue Jays.

Posted Up

South Korean shortstop Jung-ho Kang is expected to be posted next week for MLB teams to bid on.

The 27-year-old has spent nine seasons in the Korean Baseball Organization. Last year, Kang batted .354 with 39 home runs.

He is already drawing interest from the Athletics, New York Mets and the San Francisco Giants.

While primarily a shortstop, teams like the Giants could use him at second or third base.

Stubbs to Baltimore?

In search of pitching, the Colorado Rockies contacted the Baltimore Orioles offering outfielder Drew Stubbs.

Having lost Nelson Cruz and Nick Markakis to free agency, the Orioles are left with a corner outfield of Alejandro De Aza, David Lough and Steve Pearce. Adam Jones will remain in centerfield.

Stubbs would complement the Orioles’ lineup as a right-handed bat. Last season, he hit a career-best .289 with 15 home runs and 20 stolen bases.

Zimmermann talking to Nationals

The Washington Nationals have re-opened contract negotiations with pitcher Jordan Zimmermann.

A fair comparison to an extension for Zimmermann could be Matt Cain, who posted similar numbers before being re-signed by the San Francisco Giants for six years and $127.5 million.

Zimmermann has been an all-star the past two seasons, winning 19 games in 2013.

He threw a no-hitter against the Miami Marlins in September.