Robbie Neilson made six changes to his team, the most notable his decision to start with a back four in a 4-2-3-1 formation.
Nathaniel Atkinson, John Souttar, Craig Halkett and Stephen Kingsley lined up at the back, but Andy Halliday and Alex Cochrane finished the game in the full-back positions.
On-loan Liverpool forward Ben Woodburn was preferred to on-loan Everton frontman Ellis Simms, who came off the bench to change the game.
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With Saints down to ten men, he was one of three subs introduced early in the second half as Neilson changed the shape to 4-4-2.
Craig Gordon 6/10
Back in the team after recovering from Covid, the Scotland goalkeeper had very little to do.
Nathaniel Atkinson 5
Struggled defensively to cope with Jordan Jones. Megged by the winger and then booked for bringing him down. Better going forward.
John Souttar 8
Very strong performance from the centre-back, who didn’t let the defensive shape stop him from stepping out in possession.
Craig Halkett 7
Welcome return from injury added much-needed solidity to the defence. Showed how much he has been missed.
Stephen Kingsley 7
Solid defensively and offered a threat on the overlap, delivering some quality crosses. Just what is expected.
Cammy Devlin 7
Enjoyed his first goal for Hearts, following up a rebound, and then immediately subbed. The Australian had done his job.
Beni Baningime 7
On the receiving end of Connor Ronan’s rash red card challenge but didn’t let it affect him. Helped Hearts totally control the game.
Barrie McKay 7
Had the vision and craft to provide Boyce with plenty of chances. Set up Simms’ goal. The most creative outlet for Hearts in attack.
Ben Woodburn 5
Off the pace and ineffective. Could easily have given a penalty away. Knocked off the ball too easily.
Gary Mackay-Steven 6
Plenty of endeavour. Took a sore one from Marcus Fraser and had his moments down the left flank early on, but faded.
Liam Boyce 6
Should have scored at least two. Got himself into good scoring positions, but finishing let him down.
Ellis Simms 8
For Woodburn 55mins Instant impact with a scrappy goal. Played part in the second goal and hit the bar too. Caused Saints problems.
Josh Ginnelly 6
For Mackay-Steven 55 mins. Very direct on the right flank, zipping in a couple of great deliveries.
Alex Cochrane 6
For Atkinson 55 mins. Left footer came on in the unusual position of right-back before switching to the left.
Peter Haring 6
For Devlin 69 mins. Shored up the game in midfield with Hearts two ahead. Booked for collision with Jones.
Andy Halliday 6
For Kingsley 69 mins. Came on at right back to allow Cochrane to switch to the left. Steady enough.