<P> Earl Hamilton threw the first no - hitter in Orioles history on August 30 , 1912 ; the most recent no - hitter was a combined effort by Bob Milacki , Mike Flanagan , Mark Williamson and Gregg Olson on July 13 , 1991 . No - hitters have been thrown by four left - handed starting pitchers and five right - handers . Seven no - hitters were thrown at home and two on the road . There have been two no - hitters in April , three in May , one in July , two in August , and one in September . The longest interval between no - hitters was 36 years from May 6 , 1917 ( Bob Groom ) to May 6 , 1953 ( Bobo Holloman ) . The shortest interval was one day , May 5 , 1917 ( Ernie Koob ) to May 6 , 1917 ( Groom ) . The franchise no - hit the Oakland Athletics ( formerly `` Philadelphia Athletics '' ) the most , three times , by Holloman in 1953 , Jim Palmer in 1969 , and a combined no - hitter by Milacki , Flanagan , Williamson , and Olson in 1991 . In two no - hitters , the team allowed at least one run : by Hamilton in 1912 ( which was a loss ) and a combined no - hitter by Steve Barber and Stu Miller in 1967 . The most baserunners allowed in a no - hitter was a combined no - no by Barber and Miller , who allowed 14 in a 2 -- 1 loss to the Detroit Tigers in 1967 . Of the nine no - hitters , two have been won by a score of 1 -- 0 and two by a score of 6 -- 0 , more common than any other result . The largest margin of victory was an 8 -- 0 win by Palmer in 1969 . The smallest margin of victory was a 1 -- 0 wins by Koob in 1917 and Hoyt Wilhelm in 1958 . </P>
<P> Earl Hamilton threw the first no - hitter in Orioles history on August 30 , 1912 ; the most recent no - hitter was a combined effort by Bob Milacki , Mike Flanagan , Mark Williamson and Gregg Olson on July 13 , 1991 . No - hitters have been thrown by four left - handed starting pitchers and five right - handers . Seven no - hitters were thrown at home and two on the road . There have been two no - hitters in April , three in May , one in July , two in August , and one in September . The longest interval between no - hitters was 36 years from May 6 , 1917 ( Bob Groom ) to May 6 , 1953 ( Bobo Holloman ) . The shortest interval was one day , May 5 , 1917 ( Ernie Koob ) to May 6 , 1917 ( Groom ) . The franchise no - hit the Oakland Athletics ( formerly `` Philadelphia Athletics '' ) the most , three times , by Holloman in 1953 , Jim Palmer in 1969 , and a combined no - hitter by Milacki , Flanagan , Williamson , and Olson in 1991 . In two no - hitters , the team allowed at least one run : by Hamilton in 1912 ( which was a loss ) and a combined no - hitter by Steve Barber and Stu Miller in 1967 . The most baserunners allowed in a no - hitter was a combined no - no by Barber and Miller , who allowed 14 in a 2 -- 1 loss to the Detroit Tigers in 1967 . Of the nine no - hitters , two have been won by a score of 1 -- 0 and two by a score of 6 -- 0 , more common than any other result . The largest margin of victory was an 8 -- 0 win by Palmer in 1969 . The smallest margin of victory was a 1 -- 0 wins by Koob in 1917 and Hoyt Wilhelm in 1958 . </P>
who pitched the first no-hitter in orioles history
who pitched the first no-hitter in orioles history
Earl Hamilton
Earl Hamilton