In GTA IV, the Baseball Bat can be purchased at the back-alley gun shops for $5. It cannot be purchased from Little Jacob. This is a pretty good weapon for attacking people at point-blank range, but the knife is better. This is about a 3 or 4 hit kill and can break windows also. In The Lost and Damned, the bat is used to hit other racers in bike races. If you time your attack right and keep a distance while confronting someone, you can swing a lethal direct hit to the head which can knock out, or even kill, the person your fighting.
Hove Beach, Broker - Can be found across the street from the Broker Safehouse on Mohawk Ave, behind the wooden fence near the hot dog vendor and resting in an alcove against a building.
Meadows Park, Dukes - Can be found on the east side of the RON gas station on Cleves Ave, atop an oil storage tank. Ascend the stairs on the tank to reach the Bat.
Little Bay, Bohan - Can be found behind the apartment complex located on the southeastern corner of the intersection of Bronco St and Coxsack Ave.
South Bohan, Bohan - Can be found atop the construction project off Rocket St, on the south corner of the roof of the unfinished structure.
Boulevard, Bohan - Can be found leaning against the batting cage on the baseball field in the northeast corner of Welham Parkway.
Colony Island - Can be found behind the Colony Island Lighthouse on the north side of the island.
Can be found on the Bohan Line subway bridge that parallels the Northwood Heights Bridge.
Lancaster, Algonquin - Can be found in an alley off of Union Drive East, in front of an unused garage door.
Algonquin Bridge, Algonquin - Can be found on the northern pedestrian walkway, resting against the eastern suspension tower.
Berchem, Alderney - Can be found in a large alley south of Aspdin Dr, resting in the alcove of a building.