The Atlanta Braves have locked up another key member of the team's future, agreeing to an eight-year contract extension with 24-year-old first baseman Freddie Freeman.

The deal with Freeman is worth $135 million, sources confirmed to ESPN.com's Jayson Stark. Financial terms were not released by the team.

It is the longest contract in Braves history, supplanting the six-year, $90 million contract given to Chipper Jones in 2000, according to MLB.com.

It comes the same day Atlanta reached a two-year, $13.3 million deal with right fielder Jason Heyward, also 24.

Both players are represented by Excel Sports Management and were eligible for salary arbitration.

General manager Frank Wren said reaching a deal with each player was not a sign of the team giving up on its "file and trial" strategy of ending negotiations with players after the arbitration deadline for exchanging salary figures had ended. That date was Jan. 17.