Gaston Sirino netted a first-half brace as Mamelodi Sundowns thrashed Otoho d’Oyo 4-0 in their Caf Champions League preliminary-round tie, advancing 5-2 on aggregate.

Downs came into the game trailing on aggregate after a 2-1 loss in their first leg in the Congo and they knew a big performance was needed to overcome the visitors.

Sundowns came out the blocks firing and almost levelled the aggregate score with just 10 minutes gone as Tebgog Langerman smashed the upright with the goal gaping.

Masadawana, though, were not holding back and opened the scoring three minutes later when Lebohang Maboe was fouled in the box leaving Uruguayan Gaston Sirino to step up and calmly converted his first of the season.

It didn’t take the home side long to double their lead as Mosa Lebusa helped Sibusiso Vilakazi’s cut back over the goalline.

Sirino was on fire and he doubled his tally and put Sundowns firmly in control as he picked out the top corner with an audacious effort with 34 minutes gone.

There was no stopping a rampant Downs side in the first half as Zwane made it 4-0 just four minutes before the break, latching on to a Vilakazi pull-back before scoring an easy tap-in.

With the game all but secure Pitso Mosimane’s charges continued to push forward with only a goal-line clearance stopping Zwane from doubling his tally in the 49th minute.

Sirino was in search of a hat-trick and came close when he hit the crossbar in the 66th minute.

Mosimane made a number of changes as the clock began to wind down, which allowed his side to comfortably see out the game and progress in the Champions League with a 5-2 aggregate victory.