You might think teenage girls are the best grudge-holders on the planet. But you would be wrong. Grown men are just as capable of prolonged hatred over the tiniest little thing.

Take the England and Manchester United soccer players Teddy Sheringham and Andy Cole. Despite having to interact approximately a million times over the years, they didn’t speak to each other. Ever. Even long after they stopped playing, the hate was still there. Take for example the opening line of an Independent column by Cole in 2010: “I would rather sit down and have a [cup of tea] with Neil Ruddock, who broke my leg in two places in 1996, than with Teddy Sheringham, who I’ve pretty much detested for the past 15 years.” He goes on to explain, “We played together for years. We scored a lot of goals. I never spoke a single word to him.”

But don’t assume he didn’t have a great reason for this intense dislike. Obviously Sheringham must have done something unforgivable. And Cole does explain what happened. It was 1995 and his first ever game for England. He was standing on the sidelines waiting to go on as a substitute, thinking about how much it meant to him and his family. He knew thousands were watching. As Sheringham came off, he completely ignored Cole, not shaking his hand as is customary. That was it. From then on they hated each other.

When you’re a rich and famous sportsman, you can get almost any woman you want. But it’s still a pretty basic rule that you don’t hook up with the mother of your teammate’s child. English footballer John Terry forgot this rule.

Terry and Wayne Bridge played together for the England national team and at Chelsea. They didn’t seem to have problems until Bridge ended his three-year relationship with Vanessa Perroncel. Then, The Telegraph says, Terry moved in. Never mind that he had his own wife and children at home. Or the fact that he had been caught stepping out numerous times in the past and had sworn “I’m not going to cheat on her ever again.” Terry went to court to stop reports of his affair from hitting the papers, but he failed. Things got even worse when it emerged he might have gotten Perroncel pregnant and paid for an abortion.

Everyone was angry. According to Sport Bible, fans at Chelsea games came up with creative chants about Terry being a dog, like “same old Terry, always cheating” and “Chelsea, wherever you may be, don’t leave your wife with John Terry.” But Bridge really couldn’t forgive him. Per The Guardian, he chose to skip the World Cup rather than have to play with Terry again. Another Guardian article recounts how when they first met in a game after the scandal, Bridge refused to shake Terry’s hand. No one blamed him, and the moment went viral.

Bill Romanowski was an angry football player. This might be because he used steroids, which he admitted in 2005, according to Sporting News. He had a long rap sheet, including throwing a microwave at a teammate. But the worst is what he did to Marcus Williams.

The Raiders were having an “unusual full-tilt” practice. It was Williams’ job to block Romanowski on a running play. What happened next would end up in court. SF Gate reported the testimony of Ryan Prince, another player who witnessed it. After the play ended the two began “mixing it up.” They each grabbed each other’s facemasks, and Williams’ came flying off. Then the furious Romanowski punched him in the face. Or rather, he “crushed” it. Prince said, “It sounded gross — a really unnatural sound, and [Williams] dropped — he was out. [Romanowski] is over the top of him, screaming, ‘Don’t you ever f*cking hold me! Don’t you ever f*cking touch me!'”

Williams didn’t move for “a good period of time.” And no wonder, because he was messed up. His lawyer claimed his eye socket was completely shattered, and even when it healed he had double vision and brain damage, as well as flashbacks to the incident, depression, and memory loss. Romanowski’s attorney said it was just a case of “mutual combat” that got out of hand, and that you had to expect this kind of thing in football. The jury didn’t buy it and awarded Williams $340,000.

Despite working well together on the court, Dallas Mavericks players Jason Kidd and Jim Jackson just didn’t like each other. According to CBS News, Kidd thought Jackson was a selfish player. The Orlando Sentinel reported that it came to a head during one game where, even though they were winning, Jackson attacked another teammate for not passing to him enough. This made Kidd angry. But rumor had it that there was a different reason they became enemies, a more female reason.

This was back in the mid-’90s, when the singer Toni Braxton was huge. She was dating Kidd, and she supposedly dropped by the team’s hotel one night to pick him up for a date, but somehow ended up leaving with Jackson instead. While both teammates deny this, Braxton confused things, telling a reporter who asked about it that she would “never kiss and tell.”

Whatever happened, it finally became too much for Kidd. He told the owners that either he or Jackson had to go, and if they weren’t willing to trade one of them to another team, he would sit out until they did. He said they tried to patch things up, but their relationship was “beyond repair” and he didn’t think Jackson was really committed to winning a championship. Despite their coach saying he thought the guys would be able to “put their differences aside and move forward,” Kidd got his wish and was traded to the Phoenix Suns in 1996.