MLB Network announced that Ruben Amaro, Jr., A.J. Andrews, Keiana Martin, Bo Porter and Siera Santos have joined its lineup of on-air personalities appearing across the network’s studio programming. Amaro and Porter will serve as analysts, while Andrews, Martin and Santos join as hosts and reporters. MLB Network also announced this past Tuesday that Alex Avila and Cameron Maybin have joined its on-air lineup. Viewers can follow @RAJr_20, @aj_andrews_, @KeianaMartinTV, @Boporter16Bo and @SieraSantos on Twitter.

Amaro, the veteran front office executive, joins MLB Network following time in the New York Mets organization from 2018 through 2019. Following his eight-year playing career as an outfielder, Amaro was named the assistant general manager for the Philadelphia Phillies in 1998 before ascending to the role of executive vice president and general manager in November 2008. The Phillies captured the National League East division title in 2009, 2010 and 2011, the first three years under Amaro’s direction. During his tenure, the Phillies won the 2009 National League pennant, and finished with the best record in the Major Leagues in 2010 and 2011. Following his time with the Phillies, Amaro transitioned to the field as the Boston Red Sox first base coach in 2016 and 2017, before becoming the Mets first base coach in 2018. Amaro moved to the Mets’ front office as a special advisor in 2019. Amaro has most recently contributed to NBC Sports Philadelphia as a Phillies analyst, a role he will continue this season. Viewers can follow Amaro on Twitter via @RAJr_20 and on Instagram via @rajr_33.

As part of today’s announcement, Andrews has been named the new host of Play Ball, MLB Network’s weekly kids-focused program, which returns for its seventh season on Saturday, April 9 at 10:00 a.m. ET. Andrews’ collegiate softball career began with Louisiana State University (2012-15) – where she participated in two Women’s College World Series – before joining the Chicago Bandits (2015) of National Pro Fastpitch (NPF) and the Akron Racers (2016) as an outfielder, becoming the first women to ever win a Rawlings Gold Glove Award. Prior to college softball, Andrews played for Countryside High School in Clearwater, FL and was named Pinellas County Player of the Year, leading the state in stolen bases and batting average as a senior. Andrews also serves as an in-studio analyst for the SEC Network and hosts for the likes of BETMGM, PlayersTV, and ESPN's special 'Unapologetic the Black Female Athlete'. Viewers can follow Andrews on Twitter via @aj_andrews_ and on Instagram via @aj_andrews_.

Martin will host across MLB Network’s studio programming, including a regular role on Quick Pitch, MLB Network’s highlights show of record, plus Big Inning, MLB.TV’s live whip-around program. Martin comes to MLB Network having served as the senior team reporter for the San Francisco 49ers the last five years. Martin has contributed on-camera and written content for the team website and media channels, plus hosted the live in-studio show, “49ers Live.” Regular 49ers programs on NBC Sports Bay Area have also been hosted by Martin for the last several years. Martin’s media career has included stops with AOL Sports (2014), the Kansas City Chiefs (2016) and the Denver Nuggets (2016-17). Martin, who is a Los Angeles native, graduated from San Diego State University with a degree in Integrated Marketing Communications. Viewers can follow Martin on Twitter via @KeianaMartinTV and on Instagram via @keianamartintv.

Porter, the former player, manager, coach and executive, will make his MLB Network debut by contributing to the network’s Grapefruit League coverage from March 24-27. Following his playing career and coaching roles with the Miami Marlins and Arizona Diamondbacks, Porter served as the Washington Nationals third base coach in 2011 and 2012. At age 40, the Houston Astros hired Porter as their manager in 2013, making him the youngest manager in MLB at the time, a position he would have for the next two seasons. From 2016 through 2017, Porter was the special assistant to the general manager for the Atlanta Braves, before assuming the role of Director of Player Development and Youth Initiative for the Major League Baseball Players Association from 2018 through 2019. Porter has most recently served as the Director of Coaching Development for MLB since February 2021. Porter’s broadcast experience includes guest analyst work with MLB Network in 2014, plus a regular role with MASN covering the Nationals in 2019 and 2020. Porter most recently called the 2022 Andre Dawson Classic on MLB Network. Viewers can follow Porter on Twitter via @Boporter16Bo and on Instagram via @therealboporter.

Santos will host across MLB Network’s studio programming, including a regular presence on Quick Pitch and Big Inning. Santos joins MLB Network following her role as a sports anchor and reporter for FOX 10 in Phoenix, AZ. Prior to her time in Phoenix, Santos was a sports anchor for FOX 32 in Chicago (2018-2020), and hosted NBC Sports Chicago’s Fast Break and In The Loop programs from 2015-18. As a member of NBC Sports Chicago, Santos served as the beat reporter for the Chicago White Sox, appearing on pregame, in-game and postgame during White Sox broadcasts. Santos’ career began with Colorado Springs’ KOAA TV (2012-2013), followed by Oklahoma City’s KWTV (2013-14), and Los Angeles’ KCBS (2014-2015). In Los Angeles, Santos hosted the nightly sports show Sports Central on KCAL9, as well as pre-game and post-game reports for the all the local teams, including the Los Angeles Dodgers and Los Angeles Angels. Santos, who is a Phoenix native, graduated from Arizona State University with a degree in Broadcast Journalism and minor in Spanish. Viewers can follow Santos on Twitter via @SieraSantos and on Instagram via @siera.santos.