Shayne and Chelsea Cahill celebrated the biggest win since starting their official training partnership when exciting stayer Tippa continued his rise through the grades to win the Skybeau Final at Morphettville on Saturday.

Tippa has taken some giant strides this campaign, placed at his first three runs (including the Balaklava Cup), winning his past three starts in impressive with Rochelle Milnes in the saddle.

Despite having trainer alongside each other for a long time, Shayne and Chelsea Cahill said it was a special win.

"First real big one together as a training couple, it's a big thrill,'' Cahill said.

"He's a progressive horse who seems to be getting better every time he goes around,'' he said.

Cahill said Tippa would head for a well earnt break before he tries to pick a path through the Adelaide Racing Carnival while a tilt at the Melbourne Spring could be an option.

"He'll get a well-deserved rest and we'll get him back for the autumn,'' Cahill added.

"We'll see how he comes back, we'll try to go to some of our better races during the carnival, his rating is up there now.

"If he keeps improving like he has there is definitely a chance to sneak him over the border during the spring.

"He's a progressive horse and we don't know where the bottom is,'' he said.

Tippa was the first leg of a feature race double for rising star of the saddle Rochelle Milnes after Cararada claimed the Viddora Final for John Hyam.

"I'm really thankful,'' Milnes said.

Stephen Theodore was another trainer to record a significant milestone, his first feature from his new base at Murray Bridge when Divine Fire made a mess of rivals on the back of a brilliant Jacob Opperman ride.

Opperman elected to cut the mare loose well before the turn before they raced away in the Restricted Final (1800m).

"It's still hard to start a business from ground zero, especially in South Australia, we're a forgotten state sometimes,'' Theodore said.

"It's a hard game, we devised this plan five runs ago.

"I said to him (Opperman), don't rush, find your spot, have an economical trip and then let it rip, we're 13 runs into the prep and if they can run us down, they going to be going good because she is flying

"We were confident but we also respect the opposition, the barrier and needed luck. We made our own,'' he said.

Sir Sway continued his brilliant record with a gutsy win in the Gytrash Final with Lachlan Neindorf in the saddle while Taylor Johnstone recorded her biggest win on South Australian soil when Karavas produced a brilliant finishing burst to claim the Rebel Raider Final.

Over the border the Andrew Gluyas stable just missed out on another feature when Air Assault was narrowly beaten in the $500,000 Cranbourne Cup.