Kei Nishikori of Japan advances to Memphis final when Matosevic retires with blistered foot

Kei Nishikori of Japan advanced to the final of the U.S. National Indoor Championships when Australian Marinko Matosevic retired Saturday with a blistered right foot after losing the first set 6-4.

Nishikori will play either Feliciano Lopez of Spain or Denis Istomin of Uzbekistan on Sunday looking for his third career title and first since winning in Tokyo last October. No. 5 Nishikori was the only seed to advance out of the quarterfinals after he ousted top-seeded Marin Cilic of Croatia.

Matosevic led 2-0 before Nishikori broke back, and the 23-year-old player broke Matosevic again to go up 4-3. Matosevic then called for a trainer to bandage the ball of his right foot.

Nishikori served out and won the set in 37 minutes. Matosevic then retired.