Alonso Nicolas Tenya Koizumi
- Height 5' 9", Weight 150 lb.
He was on Peru's squad that won Bronze in the 2015 South American Championship.  He hit .538 as a junior college freshman in the US in 2016.  He was 1 for 4 with a walk for Peru in the 2016 South American Championship and posted a 4.15 ERA in four games, losing to Argentina. He and Edson Piovan had Peru's only hits against Brazil's Vitor Souza.  He batted .318 as a sophomore. 
Transferring to Mercy College, he hit .171/.216/.200 as a junior. As a senior, he was used as a pitcher (0-2, Sv, 7.47). He backed up Daniel Shimura in right field in the 2019 Pan American Games, Peru's first baseball appearance in the Pan American Games. He went 0 for 4 and did not handle a chance in the field. He also pitched briefly, relieving Ken Ishihara in the 5th against Nicaragua with the bases loaded, one out and a 3-0 deficit. He gave up a two-run single to Edgard Montiel, struck out Luis Alen, gave up a RBI single to Benjamín Alegría and walked Norlando Valle. Jose Herrera took over and let all three urns score, leaving Tenya with a 81.00 ERA. It was the 4th-highest in the games after Diego Echeverría, Dewin Pérez and teammate Kevin Yamamoto.