On August 25, 2010, Morgan was given a seven-game suspension for allegedly throwing a ball at a fan during a game against the Philadelphia Phillies at Citizens Bank Park; Morgan appealed the suspension. On August 31, Morgan ran into Marlins catcher Brett Hayes; the collision separated Hayes' shoulder. The next day, Morgan was hit by a pitch in the 4th inning, by Florida Marlins pitcher Chris Volstad. Later that night, Volstad threw a ball that went behind Morgan. Incensed by the pitch, Morgan charged the mound, taking a swing at Volstad before being clotheslined by Marlins first-baseman Gaby Sánchez, leading to a bench-clearing fight. MLB suspended Morgan for eight games and fined him an undisclosed amount. The suspension from the September 1 brawl was upheld on appeal, and Morgan started serving his eight-game suspension on September 17. The league also gave him a $15,000 fine in addition to the eight-game suspension. The incident came just days after Morgan ran into St. Louis Cardinals backup catcher Bryan Anderson in spite of the fact that the Cardinals catcher didn't have the ball and had stepped away from the plate. Morgan finished the 2010 season with a .253 average and 34 stolen bases, and led the National League in times caught stealing for the second year in a row.