Keaton Winn keeps Pirates at bay to clinch series win for SF Giants

SAN FRANCISCO — Nobody throws more split-fingered fastballs than Keaton Winn, and the rookie let 31 more fly in his third straight quality start.

Winn, the rookie from Iowa, allowed three hits in six strong innings. Thairo Estrada and Mike Yastrzemski combined for San Francisco’s first back-to-back homers of the season, supporting the starter. After Winn departed, a pair of rookie relievers and Camilo Doval protected the two-run lead Winn left with.

Doval allowed a run and put the...