Mark Wohlers has thrown 103 in Spring Training, Nolan Ryan does have the official record by Guiness Book. But that was clocked by Guiness. They are not at all games.

Guiness Record is 100.5 Nolan Ryan

Guinness record is Ryan's throw, but many, many pitchers have been unofficially recorded throwing harder than that. J.R. Richard, a former teammate of Ryan's reportedlly threw as high as 102. There are a handful of closers today that can reach 100mph as well.

Bill Lee broke the sound barrier during an inter-plantary game in 1983.

Dick Raditz of the 1961 Red Sox could throw 105 MPH. No radar gun back then though.

to beakndi if there were no radar guns then how do u kno that

Joel Zumaya of the Tigers broke the record a few weeks ago when he tossed a 102mph fastball.

Leroy "Catfish" Johnson of the old Negro League threw one at 195 M.P.H.

Hall of Famer Bob Feller was said to have thrown it 107.

Zumaya hit 104 saturday

In the 1940's Carl Hubbell threw three pitches through a US Army timing trap (a small window). The average of these three pitches was 98.6 mph. Carl was probably throwing over 100 mph if his average was that high, and to throw through the trap he probably took some velocity off of this throws.

FYI: The terminal velocity, if you drop it from an air plane is 140 ft/sec or 95.45 mph in free-fall.

Also it depends on where you point the radar gun. A ball loses roughly 10% of its velocity between the mound and home-plate. I have seen pro-scouts point the gun at the ball as it crosses home-plate just so they can say a pitcher doesn't throw that fast. Then when they sign him they point the gun at the point of release and say he is throwing 9 mph faster.