By Isaiah Burrows, Tahoe Onstage

The Arizona Diamondbacks added four Triple-A Reno Aces prospects to its 40-man roster on Wednesday.

Third basemen Wyatt Mathisen and Andy Young joined right-handed pitchers Taylor Widener and Riley Smith to bring the Dbacks’ roster to 39 players.

Arizona’s roster additions protect the four players from the Rule 5 Draft on Dec. 12.

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