Introduction
Joseph Robert Loscalzo (July 18, 1910 – October 19, 1955), known professionally as Midget Wolgast, was a world flyweight boxing champion. Wolgast turned pro in 1925 and was considered one of the fastest boxers of all time. In 1930, he defeated Black Bill for the vacant New York State Athletic Commission world flyweight title.The Ring Magazine founder Nat Fleischer, Statistical boxing website BoxRec, and the International Boxing Research Organization all rate Wolgast as the 8th greatest flyweight of all-time. He has been elected to the International Boxing Hall of Fame and the Helms Boxing Hall of Fame.
Wolgast fought future NYSAC Bantamweight Champion Tony Marino for the first time on June 6, 1932, at the Myers Bowl in North Braddock, Pennsylvania, winning in a ten-round points decision.
Notable bouts
| Result | Opponent | Type | Rd., Time | Date | Location | Notes |
| Loss | Lew Massey | PTS | 10 | 1938-02-03 | Olympia A.C., Philadelphia, Pennsylvania | |
| Loss | Maxie Berger | PTS | 8 | 1937-07-06 | Coney Island Velodrome, Brooklyn, New York | |
| Loss | Juan Zurita | PTS | 10 | 1936-07-24 | Legion Stadium, Hollywood, California | |
| Loss | Juan Zurita | KO | 5 (10) | 1936-03-28 | Arena Nacional, Mexico City, Distrito Federal | |
| Loss | Henry Armstrong | PTS | 10 | 1935-11-27 | Oakland Auditorium, Oakland, California | |
| Win | Small Montana | PTS | 10 | 1935-11-05 | Olympic Auditorium, Los Angeles, California | |
| Loss | Small Montana | PTS | 10 | 1935-11-05 | Oakland Auditorium, Oakland, California | Lost NYSAC World Flyweight Title |
| Loss | Small Montana | PTS | 10 | 1935-07-03 | Sacramento, California | |
| Win | Juan Zurita | PTS | 10 | 1935-06-28 | Legion Stadium, Hollywood, California | |
| Win | Juan Zurita | PTS | 10 | 1935-05-31 | Legion Stadium, Hollywood, California | |
| Loss | Lou Salica | PTS | 10 | 1935-05-03 | Legion Stadium, Hollywood, California | For World Bantamweight Title |
| Win | Juan Zurita | PTS | 10 | 1935-02-21 | Wrigley Field, Los Angeles, California | |
| Draw | Lou Salica | PTS | 8 | 1934-05-01 | Stauch's Arena, Brooklyn, New York | |
| Win | Lou Salica | PTS | 8 | 1934-02-14 | Broadway Arena, Brooklyn, New York | |
| Win | Jackie Brown | PTS | 12 | 1933-10-30 | Royal Albert Hall, Kensington, London | |
| Win | Pete Sanstol | PTS | 10 | 1933-08-15 | Fugazy Bowl, Brooklyn, New York | |
| Draw | Jackie Wilson | PTS | 10 | 1933-02-03 | Northside Arena, Pittsburgh, Pennsylvania | |
| Draw | Speedy Dado | PTS | 10 | 1932-09-21 | Oakland Auditorium, Oakland, California | |
| Win | Speedy Dado | PTS | 10 | 1931-12-02 | Oakland Auditorium, Oakland, California | |
| Win | Speedy Dado | PTS | 10 | 1931-10-07 | Oakland Auditorium, Oakland, California | |
| Draw | Frankie Genaro | PTS | 15 | 1930-12-26 | Madison Square Garden, New York, New York | For NBA World Flyweight Title Retained NYSAC World Flyweight Title |
| Loss | Newsboy Brown | PTS | 10 | 1930-08-19 | Olympic Auditorium, Los Angeles, California | |
| Win | Speedy Dado | RTD | 5 (10) | 1930-07-29 | Olympic Auditorium, Los Angeles, California | |
| Win | Black Bill | PTS | 15 | 1930-03-21 | Madison Square Garden, New York, New York | Won vacant NYSAC World Flyweight Title |