Hamburger was reassigned to minor league camp.

Hamburger made a strong impression this spring with a mid-90s fastball, but struggled at times as he had a 5.59 ERA in 9.2 innings. Still, his 10:2 K:BB ratio in 9.2 innings this spring indicates he could be a top option for the bullpen if a spot opens up in the majors.

Hamburger is in the running for one of Minnesota's final two bullpen spots, the Minneapolis Star Tribune reports. He has a 7.50 ERA but a strong a 7:1 K:BB ratio in six innings this spring.

Hamburger had one bad outing where he gave up four runs, but otherwise has had a strong spring. He's not on the 40-man roster which likely works against him making the bullpen.

Hamburger re-signed with Minnesota and will get an invitation to big league spring training, Darren Wolfson of ESPN 1500 am Twin Cities reports.

After a 50-game PED suspension in 2013, Hamburger revived his career in 2014 with a 3.69 ERA and 54:27 K:BB ratio in 70.2 innings between Double-A and Triple-A last season. While he struck out over a better per inning at Double-A, he had just a 6.1 K/9 IP rate at Triple-A. While he may get a shot at the big league bullpen in spring training, it's more likely he adds depth at Triple-A and will need injuries to find a role in the majors.

Mark Hamburger has excelled through his first three outings of the Venezuelan Winter League season, tossing six scoreless innings while allowing just one hit.

Hamburger has also walked four and punched out four. He pitched very well for the independent league St. Paul Saints in 2013, but will have to serve a 50 game suspension for testing positive for a drug of abuse before he's able to contribute to the Twins.

Twins signed RHP Mark Hamburger to a minor league contract.

In February, Hamburger was suspended for 50 games for testing positive for a drug of abuse. The Astros released him and he didn't latch on with a team until now, so Hamburger will now serve his sentence. "You have a choice: You either take him at his word or not," Brad Steil, the Twins' director of minor league operations, said. "I know he's made some changes in his life and he's looking forward to getting back with an affiliated club. I think he's earned a second chance, so to speak." The 6-foot-4, 195-pounder had been hitting 95 on the gun with the independent St. Paul Saints.

Astros released RHP Mark Hamburger.

Hamburger spent all of 2012 at Triple-A with three different organizations, posting an ugly 6.20 ERA over 43 appearances. He'll now look to catch on elsewhere.

Astros sent RHP Mark Hamburger outright to Triple-A Oklahoma City.

Hamburger passed through waivers last week. The 25-year-old has a 4.17 ERA this season at the Triple-A level.

Astros claimed RHP Mark Hamburger off waivers from the Padres; assigned him to Triple-A Oklahoma City.

Hamburger opened the year with the Rangers but has now has been twice claimed off waivers. He'll continue to serve as organizational pitching depth in the minors.

Padres designated RHP Mark Hamburger for assignment.

The Padres activated outfielder Jeremy Hermida from the 60-day disabled list on Thursday and optioned him to Triple-A Tucson, so Hamburger was cleared to make room on the 40-man roster. The 25-year-old right-hander was claimed off waivers from the Rangers late last month posted an ugly 7.50 ERA in five appearances with the Padres' Triple-A affiliate. There's a chance he could stick around.

Rangers designated RHP Mark Hamburger for assignment.

He was cleared in order to make room for Roy Oswalt on the 40-man roster. Hamburger has an ugly 6.55 ERA and 37/21 K/BB ratio over 45 1/3 innings this season with Triple-A Round Rock. There's a decent chance he'll pass through waivers unclaimed.

Rangers optioned RHP Mark Hamburger to Triple-A Round Rock.

The Rangers also reassigned right-hander Sean Green to minor league camp. Hamburger posted a 4.50 ERA and an ugly 1/6 K/BB ratio over 10 innings this spring. He'll continue to serve as relief depth in the minor leagues.

Mark Hamburger and Michael Kirkman will not be on the ALDS roster against the Rays.

This means at least one of Yoshinori Tateyama, Scott Feldman and Darren O'Day will make the roster. Hamburger and Kirkman are being sent to the instructional league to stay sharp, so they could return if the Rangers advance to the ALCS.

Rangers purchased the contract of RHP Mark Hamburger from Triple-A Round Rock.

The Rangers still have to clear a spot for him on the 40-man roster. Hamburger, who was originally acquired from the Twins in the Eddie Guardado deal in 2008, posted a 3.39 ERA and 70/25 K/BB ratio over 82 1/3 innings this season between Double-A Frisco and Triple-A Round Rock. He'll pitch in a middle relief role.