Hendrick Motorsports announced in a tweet on Tuesday morning that driver Dale Earnhardt Jr. will retire from the NASCAR Cup Series at the end of the 2017 season.

The 42-year-old began his career is 1999, with his first Cup Series start being on May 30, 1999. Since then, he's secured 26 point-paying Cup race victories and has qualified for the NASCAR playoffs eight times, according to Hendrick Motorsports.

Earnhardt is expected to discuss his decision in a press conference Tuesday afternoon.