Here’s a thought that should comfort every parent watching their kid hit a “wrong-looking” shot: one of the most famous strokes in tennis history exists because a 9-year-old wasn’t strong enough to swing his racquet.
Björn Borg’s two-handed backhand — the shot that helped him win 11 Grand Slams — was born from a wooden racquet that was simply too heavy for a small boy. Coaches told him it would never work. He didn’t listen.
Childhood
Björn Borg was born in Stockholm, Sweden, on June 6, 1956, and grew up in the nearby town of Södertälje, the only child of Rune and Margaretha Borg. His father had won a tennis racquet as a prize in a table tennis tournament and gave it to Björn. That was the beginning — no tennis family, no master plan.
He started playing at 9. The wooden racquet was far too heavy for him, so he used two hands on both sides just to get the ball over the net. He also didn’t take a single tennis lesson for his first three years — he just played, developing his own homegrown strokes instead of textbook ones. As he grew stronger he moved to a one-handed forehand but kept both hands on the backhand, whipping it with a motion shaped by his other love: ice hockey.
His parents never pushed him. He lived, by all accounts, a normal boyhood — playing soccer and ice hockey alongside tennis, sailing with his parents in the summer. Tennis was something he did, not something he was.
What set him apart early
When top Swedish coach Percy Rosberg spotted Borg as a kid — he was actually scouting older players when he noticed Björn — he invited him to train at Stockholm’s SalK club despite disliking Borg’s unorthodox, flicky strokes. For the next five years, Borg made a 90-minute train trip from Södertälje to Stockholm every day after school.
At first, the club’s better players destroyed him. Two years later, he beat them all.
What Rosberg saw wasn’t technique — it was the stuff underneath it: “His footwork was fantastic,” Rosberg said. “Even then he would hit one more ball back against the opponent.” Borg’s gift was retrieval and refusal. He simply would not miss.
By 13, he was beating the best under-18 players in Sweden. Davis Cup captain Lennart Bergelin reportedly warned people not to try to change the kid’s rough, jerky strokes. They were effective.
How he trained as a junior
- Self-taught for the first three years — no lessons, no technical rebuilding, just play. His strokes were his own: heavy topspin, two hands on the backhand, built for consistency.
- Multi-sport childhood: soccer, ice hockey, and tennis. The hockey slap shot fed directly into that whipping backhand; the soccer built the legendary footwork.
- SalK club in Stockholm: after Rosberg’s invitation, a 90-minute train ride each way, every day after school, for five years. That’s the sacrifice — and note who made it: the kid, willingly, riding the train.
- Protected from “fixing.” When conventional coaches said he’d never amount to anything with that two-handed shot, Bergelin shielded him. Borg himself later said: “Some people at the club said I’d never amount to anything with my two-handed shot. Maybe the reason why I got so far was because I wouldn’t listen.”
He won his first junior tournament at 11 (the Sörmland County Championships), became junior Wimbledon champion at 16 (1972), and turned pro in 1973 at 17.
The through-line to pro success
Borg won 11 Grand Slam titles in a nine-year career: five straight Wimbledons (1976–80) and six French Opens. His game — baseline grinding, heavy topspin, supernatural fitness, and ice-cold composure — was simply the junior game scaled up: hit one more ball back than the other guy.
He also holds the Davis Cup’s only undefeated singles record, 33–0. And then, at 26, at the height of his powers, he walked away — burned out from the pressure and the grind. That’s the shadow side of the story, and it belongs here: even the kid with the non-pushy parents and the normal boyhood hit a wall.
What tennis parents can take from this
1. Don’t let anyone “fix” what works. If a coach wants to rebuild your kid’s unorthodox-but-effective stroke, ask what problem it’s actually causing in matches. Borg’s coaches wanted to change the two-hander because it looked wrong. It won him 11 Slams. Ugly and effective beats pretty and broken.
2. Footwork and fitness are the real fundamentals. Nobody remembers Borg for a textbook swing. They remember that he got to everything and never missed. For juniors, movement training — agility, balance, endurance — pays off more and longer than the perfect forehand shape.
3. A normal childhood is not a wasted childhood. Borg played multiple sports, wasn’t pushed, rode the train because he wanted to be there. He still became world No. 1 at a younger age than almost anyone. If your 9-year-old loves soccer too, that’s not a distraction from tennis — it might be the reason the tennis works.
We’re parents, not coaches — this is what the story taught us, not a prescription.
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