Ambrose leaving JTG Daugherty Racing

HARRISBURG, N.C. (AP) -Marcos Ambrose is leaving JTG Daugherty Racing at the end of the season.

Team co-owner Tad Geschickter says the organization is disappointed to see the Australian driver leave after five seasons. Ambrose started with the team in the Truck Series, and helped it expand to NASCAR's premier Sprint Cup Series.

Ambrose debuted with the team in a 2006 truck race at Martinsville. He won two Nationwide Series races for JTG, and nearly won the Cup race at Sonoma last month. He lost the race when, while trying to conserve fuel under caution, he turned his engine off and couldn't maintain reasonable speed.

Ambrose did not say where he will drive next season, but he's believed to be close to finalizing a deal with Petty Enterprises.