Clashes between teams managed by Jose Mourinho and Pep Guardiola have affected many a title race over the years, but pride might take precedence over Premier League points during Sunday's meeting between Tottenham and Manchester City.
Mourinho has lost more games in all competitions against teams coached by Guardiola than against any other manager, and he will be desperate to send City packing after Tottenham ended a torrid run of Premier League results with a 2-1 win over Norwich City.
But Spurs were far from convincing against the Canaries, Son Heung-min's 79th-minute winner sparing them the ignominy of a fifth consecutive winless league outing after a lacklustre performance at home to the division's bottom club.
City arrive at Tottenham Hotspur Stadium in buoyant mood, meanwhile, having recovered from a disappointing December and put together a five-game unbeaten streak in the Premier League that included a 6-1 thrashing of Aston Villa.
The title looks beyond City given Liverpool's comfortable lead at the top of the table, but with third-placed Leicester City faltering, Guardiola will be keen for his men to tighten their grip on second and remain poised to close the gap at the summit should the Reds suffer an unlikely blip.
GUARDIOLA GUNNING FOR NORTH LONDON RECORD
No top-flight team have ever won six consecutive away matches against Arsenal and Tottenham, but if City claim three points against Spurs on Sunday, Guardiola's side will claim that record.
City have won on their past five trips to North London - enjoying as many victories as they claimed in their first 40 Premier League games at Arsenal and Spurs - and another happy day in the capital looks well within their reach.
Victory for the champions would see defender Aymeric Laporte break the record for most wins (43) in his first 50 Premier League appearances, currently shared by Didier Drogba, Arjen Robben and Ederson (all 42).
Kevin De Bruyne provided the assist as Sergio Aguero scored the winner in City's 1-0 win at Sheffield United last time out in the league, and the Belgium international has averaged an assist every 180 minutes in the Premier League - the best ratio in the competition's history.
But Tottenham also have a man in form in Dele Alli, who has had a hand in nine goals in 16 games in all competitions under Mourinho - three times as many as he had registered under Mauricio Pochettino this season (two goals, one assist in 10 appearances).
HEAD-TO-HEAD: PEP GUARDIOLA V JOSE MOURINHO
Spurs are the fifth team Mourinho has taken charge of against Guardiola as the two coaches prepare to do battle for the 23rd time in their managerial careers.
Mourinho has tasted victory in home games against Guardiola's teams just twice, getting one over his old nemesis when Inter beat Barcelona 3-1 in April 2010 and when Manchester United edged out City 1-0 in October 2016.
But Guardiola is unbeaten on the road in league fixtures against Mourinho, overseeing three victories and one draw against teams managed by the Spurs boss.
Only against Manuel Pellegrini (6) and Unai Emery (5) has Guardiola faced a manager more times on the road without losing a league game.
City are yet to win three consecutive Premier League away games this season, but that will change if they claim maximum points in North London.
The champions are in a rich vein of form, winning six and drawing one of their past eight league games. Although they lost to Manchester United in the EFL Cup on Wednesday, City still advanced into the final on aggregate.
Guardiola will be relishing the prospect of a chance to condemn Spurs to a third defeat in seven home league games under Mourinho, who is struggling to shore up a leaky defence.
Tottenham have kept just two clean sheets in their past 19 Premier League matches, during which time they have scored 27 goals and conceded 26, but they will aim to make home advantage count against City.
Only Norwich (71 per cent) and Everton (70 per cent) have claimed a higher percentage of league points from home games this term than Spurs (68 per cent), who have not earned back-to-back top-flight wins since they beat Burnley and then Wolves in early December.
There was a time when Tottenham looked forward to Premier League clashes with Manchester City, who they have beaten 23 times in the competition.
But none of the past six league meetings between the two sides have resulted in a Spurs victory, the Lilywhites claiming two draws and suffering four defeats since beating City 2-0 in October 2016.
That defeat was the only game in City's most recent 18 clashes with Tottenham in which they have failed to score.
Spurs twice came from behind to draw 2-2 at Etihad Stadium when these sides last met in the league, and if the points are shared again on Sunday, it will be the first season since 2003-04 to produce two top-flight draws between them.