Read the passage and find the corresponding pronoun for the given name. The pronoun should match the given blank(_). The word between ** ** is the target name. The pronoun should be one of 'her', 'him', 'he', 'she' and 'his' with proper casing based on the position in the passage.

Geller is reckoned to have been among the best ten players in the world for around twenty years. He was awarded the International Master title in 1951, and the International Grandmaster title the following year. **Geller** played in 23 USSR Chess Championship s, a record equalled by Mark Taimanov, achieving good results in many. _ won in 1955 at Moscow (URS-ch22) when, despite losing five games, he finished with 12/19, then defeated Smyslov in the playoff match by the score of +1 =6.
He