After a typical slow start to the season and 87 runners without a victory, John Size made an emphatic return to the winners’ enclosure with a treble at Sha Tin on Sunday.

The 13-time champion Hong Kong trainer managed just two wins and a frustrating 19 placings from the first 18 meetings of the season, before he struck with Sight Hermoso, Ka Ying Power and the impressive Szeryng on Sunday.

“Normally, as you’ve probably read 1,000 times, we have slow starts to seasons but as long as we get going eventually, that’s the main thing,” Size said.

Four-year-old Szeryng was the most impressive of Size’s three winners, returning with a dominant performance under Zac Purton in the Class Four Suisse Programme Handicap (1,200m).

Backing up his impressive recent trials at Conghua, the son of Almanzor travelled in the box seat before taking control early in the straight and surging clear to salute as the $2.85 favourite.

He comfortably accounted for Great Spirit by two and three-quarter lengths, adding the success to his one victory at Sha Tin from four starts last term.

“He’s showing some promise,” Size said.

“He’s still in the lower classes. As he gets a bit higher in grade, we’ll have a better guide to see where he’s going.”

Fellow four-year-old Sight Hermoso kick-started Size’s day with a strong triumph at start two in the Class Four Grace One Handicap (1,000m).

Unlucky on debut when sixth behind Robot Lucky Star up the straight, the Headwater gelding found plenty of clear running near the centre of the track when launching his run from just behind the leaders.

Jockey Brenton Avdulla drove Sight Hermoso to the lead passing the 100m and he drew clear to beat the fast-finishing Little Monster by a length.

“He ran very well, didn’t he? It was a convincing win,” Size said.

Ka Ying Power completed a race-to-race double for Size and a rare feat for the Australian handler with victory in the Class Five Kate Tokyo Handicap (1,400m).

Formerly trained by Benno Yung Tin-pang and Tony Cruz, Ka Ying Power was Size’s first winner from a stable transfer since Sight Believing in 2013.

“He came from Benno so he was in very good condition. He just needed a little bit more time to get his head right,” Size said.

Size heaped praise on Keith Yeung Ming-lun for his ride on Ka Ying Power, who had managed just one placing from 20 Hong Kong starts before Sunday’s breakthrough result.

Yeung settled Ka Ying Power just behind midfield from gate 10 and he stormed home down the outside to defy his $32 quote, beating Team Happy by a length and a quarter.

“Keith managed him very well. He was a little bit keen early but in the straight, when he asked him to go, he went like he wanted to win the race,” Size said of Ka Ying Power, who was unbeaten from three pre-import starts in Italy when known as Hurricane Black.

“He doesn’t like the whip much, but Keith still got him to gallop and he did a good job.

“He seems to be racing a little bit better and in that class, he might win again. He’s still only a lightly weighted horse, so we’ll see if we can get another one.”