Match ends, St. Johnstone 2, Motherwell 1.
Steven MacLean scored twice as St Johnstone recovered from the loss of an early goal to record their first victory of the season.
The striker turned the ball in from close-range twice in the second half, helped by assists from David Wotherspoon and Michael O'Halloran.
Louis Moult had bundled Motherwell ahead on 11 minutes.
Jake Taylor picked up a late second booking for simulation as the visitors slumped to a fourth successive loss.
Motherwell are now without a point in five visits to McDiarmid Park.
Three points for St Johnstone lift Tommy Wright's side to seventh in the Premiership and although clean sheets evade Saints, there is no shortage of goals.
MacLean, formerly of clubs such as Rangers, Aberdeen and Sheffield Wednesday, has now already equalled his tally from last season of three strikes - he looked threatening for three quarters of the match.
It was the first quarter when Saints stalled a bit, with Lionel Ainsworth getting the better of Brian Easton down the right to square the ball low for his fellow Englishman Moult to open his account in the most straightforward of ways since joining from Wrexham.
Ainsworth and Scott McDonald then scorned chances to add to the visitors' lead.
Motherwell goalkeeper Connor Ripley - son of former Blackburn Rovers winger Stuart Ripley - had looked awkward versus Aberdeen last week but his two saves from 15-yard MacLean strikes were impressive.
MacLean had better luck from a few yards out after the break.
His first was set up by substitute Wotherspoon and converted into the middle of the goal, then O'Halloran wriggled free down the right to expertly provide another on a plate for him in a match watched by Scotland manager Gordon Strachan.
To complete a miserable day for Motherwell, Welsh midfielder Taylor, on loan from Reading, picked up a second yellow from referee Craig Thomson for going down too easily.
- 29O'HalloranSubstituted forCraigat 87'minutes
- 4LappinSubstituted forWotherspoonat 58'minutes
- 18CumminsSubstituted forKaneat 73'minutes
- 3HammellSubstituted forChalmersat 45'minutesBooked at 68mins
- 7AinsworthSubstituted forLeitchat 68'minutes
- 25TaylorBooked at 86mins
- 77McDonaldSubstituted forThomasat 78'minutes
- Craig Thomson
- Shots on Target
Second Half ends, St. Johnstone 2, Motherwell 1.
Attempt missed. Louis Moult (Motherwell) header from the centre of the box misses to the left following a set piece situation.
Foul by Chris Millar (St. Johnstone).
Louis Moult (Motherwell) wins a free kick in the attacking half.
Corner, St. Johnstone. Conceded by Josh Law.
Substitution, St. Johnstone. Liam Craig replaces Michael O'Halloran.
Second yellow card to Jake Taylor (Motherwell).
Jake Taylor (Motherwell) has gone down, but that's a dive.
Corner, St. Johnstone. Conceded by Joe Chalmers.
Attempt missed. David Wotherspoon (St. Johnstone) right footed shot from outside the box misses to the right from a direct free kick.
Christopher Kane (St. Johnstone) wins a free kick in the attacking half.
Foul by Stephen McManus (Motherwell).
Goal! St. Johnstone 2, Motherwell 1. Steven MacLean (St. Johnstone) left footed shot from very close range to the centre of the goal. Assisted by Michael O'Halloran.
Substitution, Motherwell. Dom Thomas replaces Scott McDonald.
Attempt missed. Steven MacLean (St. Johnstone) left footed shot from the right side of the box misses to the left.
Substitution, St. Johnstone. Christopher Kane replaces Graham Cummins.
Attempt saved. Marvin Johnson (Motherwell) left footed shot from the left side of the box is saved in the centre of the goal.
Chris Millar (St. Johnstone) wins a free kick in the attacking half.
Foul by Keith Lasley (Motherwell).