Since 1871 was the first season every record was set, and it's too early for milestones, but there were a couple of notable achievements this season.
Joe Start was one of the best first baseman in baseball this year for the Indians, winning both a Gold Glove and Silver Slugger Award while going to the All-Star game, and Start also became the first player in the history of the league to pick up 6 hits in a game when he went 6-7 in the Indians 26-8 drubbing of the Yankees.
Count Sensenderfer of the Reds hit safely in 26 straight games before an 0-4 night against the Dodgers ended his hitting streak, the longest streak in the league this year.