The former MVP and seven-time All-Star was drilled in the hand by a 97.9 mph fastball from Dan Altavilla and fell to the ground, writhing in extreme pain.
Buggs is already facing separate misdemeanor animal cruelty charges after Tuscaloosa police were previously called to a residence and found two malnourished dogs.
Ledecky qualified on the first night of trials in front of thousands at Lucas Oil Stadium. Aaron Shackell will also head to Paris after winning the men's 400 freestyle final.