Baseball

Baseball was a sport from Earth, played with a baseball and a baseball bat. An alternate, and presumably British, name for the sport was rounders — at least according to Izzy Sinclair. (DWM: Wormwood)

During the St. Valentine's Day Massacre in 1929 Chicago, Al Capone beat his own bodyguards to death with a baseball bat under the influence of Agonal. (NA: Blood Harvest)

Jerome Weismuller, a CIA agent working in 1959 Wales, wore a baseball cap and jacket with the logo of the New York Yankees. (DW: Delta and the Bannermen)

Ace often carried a baseball bat in her rucksack and used it as a weapon. In 1963 Shoreditch, the Seventh Doctor used the Hand of Omega to enhance the bat's offensive capabilities and render it effective against Daleks. It was later destroyed when the Doctor used it to cripple the Imperial Daleks' Transmat device. (DW: Remembrance of the Daleks)

The Sixth Doctor and Frobisher attempted to use the TARDIS to sneak into a baseball stadium in 1980 New York City without paying, in order to pick up Peri Brown. The Doctor got the coordinates wrong, and the TARDIS materialised in the middle of the baseball field instead. (DWM: Time Bomb)

Hex found Ace's baseball bat from her time at school, which led them to realise they were still in the Celestial Toymaker's world. (BFA: The Magic Mousetrap)

Izzy Sinclair used Ace's baseball bat to smash the Threshold's control centre. (DWM: Wormwood)

Reggie Mead blew off steam by smashing his office up with a baseball bat. (BFA: Project: Twilight)

Mickey Smith had a baseball bat in his flat, with which he attempted to hold off Sip Fel-Fotch Passameer-Day Slitheen. (DW: World War Three)

Ellie Johnson and Evan Sherman used baseball bats as weapons. (TW: Countrycide)

The Blackwood Falls carnival was set up on the town's baseball field. (NSA: Forever Autumn)

During one of the anti-book riots of the late 1980s, Bobby Prescott used a baseball bat to defend his municipal library from teenagers, only stopping because the bat had been reduced to a useless wooden stump. (NA: Cat's Cradle: Warhead)