Palin had beaten Murkowski in 2006 in a primary battle in which she campaigned as a reformer and backed an unsuccessful 2010 challenge to Murkowski's daughter, U.S. Sen.

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In 1994, Fitzgerald waged an unsuccessful primary challenge to Crane.

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Teams are permitted two opportunities per innings to contest an on-field decision, losing a challenge for an unsuccessful review.

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"In particular, the possible emotional impact on Kiki of having an opportunity to meet her mother, given this would be denied should her mother be unsuccessful in the challenge, was considered carefully, " said the broadcaster.

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