Bremen, who grabbed their first win in seven league games and are battling to avoid the drop after playing Champions League football earlier this season, are now on 28 points in 14th place, three points above the relegation playoff spot.

Sandro Wagner gave the visitors the lead after 16 minutes when Freiburg cleared a Pizarro header off the line but the 23-year-old striker was on hand to score from close range.

Freiburg levelled just after the break with a penalty from Papiss Demba Cisse, who now has 17 league goals this season, one less than Bundesliga top scorer Mario Gomez of Bayern Munich.

But with eighth-placed Freiburg increasing the pressure late in the game Marin broke free, fed Pizarro with a well-timed pass and the Peruvian, the Bundesliga's all-time top foreign scorer, fired in a low drive after 76 minutes.

Germany international Marin turned scorer deep in stoppage time to seal Bremen's first win since mid-January.

Borussia Dortmund are cruising toward their first title since 2002 with a 12-point lead after beating Cologne 3-1 on Friday.

Bayer Leverkusen tightened their grip on second spot with a 3-0 win over VfL Wolfsburg on Saturday that lifted them to 49 points. Bayern Munich dropped to fourth, a further seven points behind, after a 3-1 defeat at Hanover 96, who are third on 47.