An 18-year-old man who had just finished playing a soccer game in Red Hook Park was shot twice in the buttocks yesterday by gunmen who allegedly "had a beef" with him. The shots rang out around 4 p.m. in the middle of the park, sending people running for cover. Guillermo Garcia, who was playing soccer in the park at the time, told the Daily News, "First there was a sound—bam, bam, bam! Then everyone was screaming and everyone started shouting." The victim is currently stable at Lutheran Medical Center, and no arrests have been made yet; the gunmen allegedly fled in a minivan.