Former Manchester United striker Carlos Tevez has helped guide Boca Juniors to the Argentine Primera Division title.
The 31-year-old rejoined his hometown club in July from Juventus and has scored five goals in 11 appearances to secure them the championship.
A 1-0 victory for Tigre sealed the title, which was the 31st in their history, leaving them five behind River Plate as Argentina's most successful club.
"I've won championships in many places but nothing compares with this," BBC Sport quotes Tevez as saying.
Tevez has also won the Premier League title with both Manchester United and Manchester City and two Serie A championships with Juventus.