on September 13. Eleven days later, with two games left to play in the season, the two were tied at 66 home runs each. Sosa ended the season with 66, finishing behind McGwire's 70. It was during that season that Cubs announcer Chip Caray nicknamed him "Slammin' Sammy", a nickname that quickly spread. Sammy produced then career-highs in batting average and slugging percentage, at .308 and .647 respectively. Sosa also led the league in RBIs and runs scored. Also in 1998, Sosa's 416 total bases were the most in a single season since Stan Musial's 429 in 1948. Sosa's performance in the month of June, during which Sosa belted 20 home runs, knocked in 47 runs, and posted an .842 slugging percentage, was one of the greatest offensive outbursts in major league history. Sosa won the National League Most Valuable Player Award for leading the Cubs into the playoffs in 1998, earning every first-place vote except for the two cast by St. Louis writers, who voted for McGwire. He and McGwire shared Sports Illustrated magazine's 1998 "Sportsman of the Year" award. Sosa was honored with a ticker-tape parade in his honor in New York City, and he was invited to be a guest at US President Bill Clinton's 1999 State of the Union Address. 1998 was also the first time the Cubs made the post-season since 1989. The Cubs qualified as the NL Wild Card team, but were swept by the Atlanta Braves in the NLDS. In the 1999 season, Sosa hit 63 home runs, again trailing Mark McGwire, who hit 65. In the 2000 season, Sosa led the league by hitting 50 home runs. He received the Babe Ruth Home Run Award for leading MLB in homers. In 2001, he hit 64 home runs, becoming the first player to hit 60 or more home runs three times. However, he did not lead the league in any of those seasons; in 2001, he finished behind Barry Bonds, who hit 73 homers, breaking the single-season home run record set by McGwire in 1998 (70). In 2001, he also set personal records in runs scored (146), RBI (160), walks (116), on-base percentage (.437), slugging percentage (.737), and batting average (.328). He led the majors in runs and RBI, was second in home runs, second in slugging percentage, first in total bases, third in walks, fourth in on-base percentage, 12th in batting average,