How a change of manager can have an impact in football.
Just under two weeks ago, Manchester United football club looked like it was on a one-way route to a mid-table finish after a 3-1 loss away at Liverpool.
But after Jose Mourinho was relieved of his duties following that result, United's quest for a top-four finish is well and truly back on.
Interim manager Ole Gunnar Solskjaer has galvanised the club in the days since Mourinho's departure, winning both his games and scoring eight goals in the process.
Paul Pogba managed to get himself back on the scoresheet in the 3-1 win over Huddersfield after falling out of favour with Mourinho.
The Frenchman is far and away the Red Devils' most creative player and he appears to have been freed of his shackles.
And another player who will be hoping to go down the same road as Pogba in the post-Mourinho era is Alexis Sanchez.
The Chilean is United's highest-paid player, but has struggled for any kind of form since his move from Arsenal in January.
But Solskjaer spoke very highly of Sanchez after the Huddersfield win, naming him as a 'workaholic' following his return to training.
“Alexis is back, he flew in [last Friday], he's had two days of good fitness work, hopefully he can join in training with the ball as soon as we get back in," the manager said, per Telegraph.
“It’s touch and go for Bournemouth, but he will definitely be involved at Newcastle. I’ve not had time to sit down and speak in that detail with him but we had a day off on Christmas Eve and Christmas Day he was off but he was in training [anyway].
"He’s eager to get back on the pitch, he's a workaholic it seems like.”
If Solskjaer can get the Chilean firing upon his return against Bournemouth, he will have already worked miracles.