Pirates' pitchers have posted an aggregate negative WPA in nine straight games. The longest stretch of negative pitching WPAs in the MLB this season is held by the Cleveland Indians, with 11, from July 27 to August 7.
Pirates pitchers have also posted negative RE24 in nine straight games. That ties a franchise record for the period in which we have data (1948-2012).
Pitching stats for the past nine games: 81 IP, 94 hits, 13 HR, 6.56 ERA.
RE24 explained; WPA explained