Success can come down to fine margins, and that could well prove to be the case in this season's enthralling Premier League title race.
Manchester City secured a 1-0 victory away to Burnley on Sunday courtesy of Sergio Aguero's goal in the 63rd minute, which was awarded after goal-line technology was consulted.
Replays showed that Aguero's effort went over the line despite the best efforts of Burnley defender Matthew Lowton.
There was initially some uncertainty over whether Aguero's goal would be given, but referee Paul Tierney allowed it to stand.
Aguero stated after the game that he knew the ball had crossed the line.
The ball was, though, just 29.5 millimeters over the line at Turf Moor, and City's victory ensured that they returned to the top of the Premier League, going one point ahead of Liverpool with both teams having two games left to play.
Earlier in the season there was another close call that could prove to be crucial in the outcome of the title race.
During City's 2-1 victory over Liverpool at the Etihad Stadium on January 3, Sadio Mane came close to scoring for Jurgen Klopp's side.
City defender John Stones somehow managed to keep Mane's effort out.
It eventually emerged that Mane's attempt was just 12 millimeters short of going in.
In that fixture Aguero gave City the lead and Roberto Firmino then equalised for Liverpool before Leroy Sane scored what proved to be the winner for the hosts.
Had Liverpool managed to get a draw in that game then they would currently be level on points with City, although Pep Guardiola's team do have a superior goal difference.
There could still be further twists and turns to come in the title race, with Liverpool facing Newcastle away on Friday before City host Leicester two days later.
Then on the final day City are away to Brighton and Liverpool host Wolves.
When the season is over and the events of this remarkable campaign are assessed, these two incidents could be seen as being hugely important.