Youngster Dom Thomas inspired ten-man Motherwell to come from behind and claim their first point of 2015 and end a run of five defeats.
New signings Anthony Straker and Louis Laing were given their first starts as Stephen Pearson and Stephen McManus became the latest to join the Fir Park injury list.
However, the duo barely had time to take in their new surrounding before St Johnstone were ahead in nine minutes.
Laing’s wayward header fell for Chris Kane who turned Mark O’Brien and played in MURRAY DAVIDSON to slip the ball beyond Dan Twardzik.
The away side continued to dominate as former ’Well favourite Simon Lappin sent in a swirling corner that caught out Twardzik, but Tam Scobbie knocked the ball wide at the back post.
Laing’s afternoon ended after just 25 minutes when he bundled over Kane as the St Johnstone man raced for goal and was shown red by referee Willie Collum.
’Well were causing themselves problems and had Twardzik to thank for keeping out Davidson after Simon Ramsden lost possession at the edge of the box.
At half-time the home side lost the services of O’Brien due to an ankle injury and Fraser Kerr joined Craig Reid in the centre of defence.
It appeared the one way traffic would continue as Steven MacLean put a diving header wide, the hosts dragged themselves back into the game.
MacLean proved more effective at the other end as he cleared a Kerr header off the line and then on 59 minutes game the spark ’Well needed as Thomas climbed off the bench to replace Luke Watt.
The 18-year -old got his foot on the ball and began to torment the St Johnstone defence with his close control.
However, he isn’t scared to have a shot and Alan Mannus had to get his positioning right to keep out a 30-yard effort.
James McFadden was given a polite response as he came on as a sub for Saints, but it was the young pretender who stamped his authority on the game.
On 75 minutes Thomas wriggled away from three challenges and played a beautifully weighted ball into the path of JOHN SUTTON who lashed it into the top corner.
Motherwell: Twardzik, Reid, Carswell (Moore 70), Ramsden, Sutton, O’Brien (Kerr 46), Law, Erwin, Watt (Thomas 59), Straker, Laing. Subs not used: Nielsen, Ainsworth, Cadden, MacLean.
St Johnstone: Mannus, Scobbie, Lappin, Anderson, MacLean (Graham 80), Wotherspoon, Davidson, Miller, Croft (O’Halloran 80), Easton, Kane (McFadden 70). Subs not used: Banks, MacKay, Wright, Caddis.
Referee: Willie Collum.