Muzi Yeni has two meetings to close the gap on Lyle Hewitson for this season's South African riding premiership.

The showdown between runners from the Eric Sands and Mike de Kock stables transpired as expected in the G1 Champions Stakes over 1800m at Greyville on Saturday.

Champion trainer Mike De Kock says this year's Vodacom Durban July at Greyville on Saturday is probably the toughest he has seen.

Do It Again will go into the Durban July as the defending champion and likely favourite after his top class performance to win the G1 Rising Sun Gold Challenge at Greyville on June 8.