Bo Porter accepted the Astros’ managerial job in September. (Alex Brandon / AP)

Tony Beasley, who managed Class AAA Syracuse last season, could replace now-Astros Manager Bo Porter as the Nationals’ third base coach.

The Nationals need to wait to finalize their 2013 coaching staff until after Manager Davey Johnson’s contract situation is settled. Johnson is under contract as a consultant for 2013, but the Nationals must rework his deal for him to return as a manager – which both he and General Manager Mike Rizzo have said they want.

Their lone move on the coaching staff figures to be replacing Porter, who accepted the Astros’ managerial job in September. Beasley is in the mix and would take the job if asked, a person familiar with the situation said.

Under Rizzo, the Nationals have generally promoted from within to fill openings on their coaching staff and even in their minor league system. He wants to foster continuity and give players the comfort of moving up the levels of the system with familiar coaches.

Beasley, 45, has extensive experience as both a major league third base coach and a minor league manager. Last year, Beasley managed Syracuse to a 70-74 record in the International League. Even if the Nationals choose someone other than Beasley, he would remain in the organization in some capacity.

Beasley managed for five seasons in the Pittsburgh Pirates minor league system before he joined the Nationals in 2006 for one season as their third base coach. He returned to the Pirates for the next four seasons, serving as their major league third base coach from 2008 to 2010. The Nationals lured him back in 2011, and he spent one season managing Class AA Harrisburg and last year in Syracuse.

In another note on the coaching staff, the Toronto Blue Jays have not contacted bench coach Randy Knorr about their managerial vacancy, created when John Farrell left for the Boston Red Sox earlier this week. Knorr, considered a possible successor to Johnson, won two World Series with the Blue Jays in the early ’90s. Several people in the sport considered Knorr a potential fit, but the Jays have not reached out, at least not yet.