January 18, 2011 officially marked the beginning of "Balfour Rage."
The A's signed Australian relief pitcher Grant Balfour to a two-year, $8 million contract with a $4.5 million option for a third year. Balfour, who was 33 years old at the time, had spent the previous four seasons with Tampa Bay, seeing mixed results.
The right-hander was coming off a strong season in 2010, however, going 2-1 with a 2.28 ERA in 57 appearances. He had never been a closer in his big league career, but averaged better than a strikeout per inning as a setup man.
Balfour had a strong 2011 season in Oakland in a setup role. He went 5-2 with two saves and a 2.47 ERA, striking out 59 in 62 innings. Balfour eventually took over the closer role in 2012 and recorded 24 saves in 26 opportunities with a 2.53 ERA.
The A's exercised Balfour's option in 2013 and he posted a career-high 38 saves in 41 opportunities with a 2.59 ERA, earning his first and only All-Star appearance. He also set the A's franchise record with 41 consecutive saves converted.
Balfour quickly became a fan favorite, known for his fiery passion and screaming of profanities on the mound. "Balfour Rage," as it became known, sometimes rubbed batters the wrong way, but Balfour insisted it was just his way of pumping himself up. Needless to say, A's fans loved it.
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The Balfour signing was a great success for Oakland. In three seasons, he went 9-7 with 64 saves and a 2.53 ERA. For just over $12 million, that was a bargain.
Balfour proved to be a late developer in his career. He didn't really put it all together until he was in his 30s. While the A's signed Balfour to be a setup man, they were open to an increased role for him and eventually he earned the closer job.
Of course, Balfour's personality was a big part of his success in Oakland. "Balfour Rage" resonated with fans and teammates alike. That became his identity and both he and his team embraced it.
2019 free agent comparison
It's not exactly "Balfour Rage," but Sergio Romo is quite flamboyant on the mound. Like Balfour, Romo wears his emotions on his sleeve and gets fired up when he records an important out, sometimes bothering hitters.
Romo, 35, went 3-4 with 25 saves and a 4.14 ERA last season with the Rays. For his career, the right-handed reliever owns a 2.86 ERA and 1.01 WHIP, averaging well over a strikeout per inning.