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Tennis - ATP Challenger Tour : Results and calendar for the season 1991
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- March
Date Place / Country Tournament Surface Winner / Status 25/03 - 31/03 
MEXSan Luis Potosi Clay 
P. Arraya - September
Date Place / Country Tournament Surface Winner / Status 02/09 - 08/09 
TÜRIstanbul Hard 
O. Delaître