Viktor Troicki is back to No. 170 in the ATP rankings, less than three months after his return to tour from a reduced anti-doping suspension. He was unranked a week into his comeback.

The 28-year-old Serbian won the Banja Luka challenger last weekend. Troicki, who won the Como challenger and was a quarterfinalist in Genova earlier this month, has posted a 14-1 record during the last three weeks.

Troicki received a 12-month suspension for refusing to take a blood test last year, but said he did not receive proper guidance from an anti-doping official. He returned to the circuit in July, getting a wild card into Gstaad and reaching the quarterfinals.