Claim: Iweta Rajlich garnered the highest rating in the 2010 Polish Women's Basketball Championship held in Poland's capital city, Warsaw.
Evidence: Iweta Rajlich (born Radziewicz, 16 March 1981 in Warsaw) is a Polish chess International Master and Woman Grandmaster, multiple winner of Women Chess Championships of Poland. 
Iweta Rajlich International Master, WGM The International Chess Federation, FIDE (Fédération Internationale des Échecs), awards several performance-based titles to chess players, up to and including the highly prized Grandmaster (GM) title.