WATCH: Matteo Berrettini breaks Casper Ruud's heart telling him Holger Rune hates him

Holger Rune and Casper Ruud haven't always seen eye to eye. The duo played a contentious match at Roland Garros, which featured bickering from both sides. They even skirmished at the net after the game, as Rune can be a bit of a sore loser.

While not overly controversial as a player, it wasn't Ruud's first spat with a fellow player. He had a pretty prominent one with Nick Kyrgios a couple of years ago, but they hashed it out since then.

It seems like Ruud and Rune are on good terms as well. They played an exhibition match in Denmark in December last year without incident. They've also spoken highly of one another, highlighting their common Scandinavian background as a connecting factor.

Matteo Berrettini played upon the dynamic, providing comic relief during the Red Bull Bassline event in Melbourne ahead of the Australian Open. Both Casper Ruud and Holger Rune participated in the event. While Ruud was warming up for it, Berrettini approached him with the mic and engaged in a bit of banter with him, saying:

“It looks like you’re playing Holger.”

“We’re best friends now," Casper Ruud replied.

“He just told me he hates you.”

The exchange was rather funny. The crowd chuckled at the interaction but Rune likely didn't notice it as he played against Fabian Marozszan.

Berrettini later clarified that he didn't mean what he said and was only "testing" Ruud.

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Casper Ruud vs Holger Rune is one of many tennis spats

Tennis spats between players aren't anything new. They've been part of the sport throughout its history, with most remaining innocent. Some have grown to mutual distaste between players, but generally, most players ultimately settle on respect for each other.

The one between Holger Rune and Casper Ruud never evolved into anything major, though some animosity remained for a while. They are seemingly on good terms now, though they will never be friends. We've seen similar spats between other players, such as between Alexander Zverev and Daniil Medvedev, and Medvedev and Stefanos Tsitsipas.

Most of these fizzle out as players move on with their lives, though players who find themselves in spats with one another rarely, if ever, become friends. The only real instance where things turned around is between Nick Kyrgios and Novak Djokovic, the two best buddies now. That wasn't the case years ago when Kyrgios called him a tool. Maybe there is hope for Kyrgios and Jannik Sinner, although that is largely one-sided.