No. 14 Juan Martin del Potro, +4 A convincing straight-sets triumph over top seed Grigor Dimitrov in the final of the Intrum Stockholm Open lifted Juan Martin del Potro into contention for a return to the Nitto ATP Finals, to be held 12-19 November at The O2 in London. Del Potro secured his 20th ATP World Tour title and jumped four spots to No. 14 in the Emirates ATP Race to London by retaining his Stockholm crown. Read Report. The Argentine has 2,135 points in the Race, 470 points behind eight-placed Spaniard Pablo Carreno Busta. The 29-year-old is looking to secure his first Nitto ATP Finals berth since 2013 as one of the top eight players to qualify for the season...