ALEX Marshall's bid for another title at the World Indoor Championships remains on track.

The six-time singles champion is through to the semi-finals after defeating Greg Harlow.

Marshall was in near flawless form as he defeated the number seven seed 2-0 (10-3, 10-2).

The victory, which comes after yesterday's (Thursday) triumph over Nick Brett, means Marshall will face Les Gillet in the semi-final.

The other semi-final clash will see Wayne Willgress take on Paul Foster, who teamed up with Marshall, of Tranent, in the pairs competition.

The semi-finals are both played tomorrow (Saturday) with the final on Sunday.