Jun 23, 2015; Miami, FL, USA; Miami Marlins right fielder Giancarlo Stanton (27) hits a two run home run in the first inning of a game against the St. Louis Cardinals at Marlins Park. Mandatory Credit: Robert Mayer-USA TODAY Sports
10. Single Season Marlins slugging percentage record (.624) held by Gary Sheffield
In 1996, Gary Sheffield posted some of the best numbers in baseball. That season saw Sheffield notch franchise records in homers, slugging percentage, OPS, on-base percentage, and walks.
Stanton held a .608 SLG in 2012 and a .606 SLG this season. .624 is a whopping slugging percentage so it will be very tough and possibly out of reach for Stanton, which is why this feat stands at number ten.