The Cubs complete a four-game sweep of the Pirates with a 7 – 6 win in Pittsburgh, as Carlos Pena, Geovany Soto and Blake DeWitt homer to send the Bucs to their 7th straight defeat. Pirates starter James McDonaldgives up 4 runs in 7 innings and drives in 3 himself, exiting the game with a 6 – 4 lead, but the Cubs rally for three runs in the 8th off four relievers, three of whom fail to record an out.

On August 4, 2011 — The Cubs complete a four-game sweep of the Pirates with a 7 – 6 win in Pittsburgh, as Carlos Pena, Geovany Soto and Blake DeWitt homer to send the Bucs to their 7th straight defeat. Pirates starter James McDonaldgives up 4 runs in 7 innings and drives in 3 himself, exiting the game with a 6 – 4 lead, but the Cubs rally for three runs in the 8th off four relievers, three of whom fail to record an out.

Source:
Baseball Reference August 4
National Pastime
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game