NHL-Sharks stun Pens, keep series alive as Jones shines

PITTSBURGH, June 9 (Reuters) - The San Jose Sharks used a first period scoring frenzy to claim a 4-2 win and keep the Pittsburgh Penguins from clinching the Stanley Cup on Thursday to send the series back to the West Coast for Game Six. Trailing 1-3 in the series and facing elimination, the Sharks got first period goals 1:49 apart from Brent Burns and Logan Couture and another from Melker Karlsson, then turned to goaltender Martin Jones and an air-tight defence to seal a 'do-or-die' victory. The best-of-seven series shifts back to San Jose for Game Six on Sunday with the Sharks still facing a daunting task. Since the Stanley Cup final went to the best-of-seven format in 1939, teams that have taken a 3-1 series lead have gone on to capture the championship 31 of 32 times. The 1942 Toronto Maple Leafs were the only National Hockey League team to battle back from a 3-1 series deficit and lift the Cup. (Reporting by Steve Keating; Editing by Mark Lamport-Stokes)