Score and situation : The San Francisco Giants forced a decisive Game 5 with an 8-3 win over the Cincinnati Reds at Great American Ballpark on Wednesday afternoon. Leading lads : After managing a total of just four runs in their first three games, the Giants offense broke out in a big way during Game 4. Angel Pagan hit the first leadoff home run in the franchise's long postseason history while Gregor Blanco and Pablo Sandoval each hit a two-run homer. Starter Barry Zito didn't have his best stuff and was yanked after allowing two runs and four walks over 2 2/3 innings of work. But manager Bruce Bochy went to the ace up his sleeve, bringing Tim Lincecum in from the bullpen with two outs in the bottom of the fourth. Lincecum struck out Ryan Ludwick to end a Reds scoring threat and he'd go on to strike out six Reds batters while allowing just one run over 4 1/3 innings of work.