07:10 AM ET 06.20 | Now a very wealthy young man, Mark Appel can begin the work of trying to earn his way into Major League Baseball. Appel's signing bonus, which is worth about $6.4 million, wasn't finalized until Wednesday morning. The figure eclipses the $4.8 million given to 2012 No. 1 overall pick Carlos Correa but is $1.4 million below maximum slot value. "We're hoping (Appel will) be an anchor of the team," Astros owner Jim Crane said. ... The 6-5, 225-pound Appel soon will begin work at the Astros' spring-training home in Kissimmee, Fla. He'll likely make his pro debut for the short-season Tri-City ValleyCats, who are based in Troy, N.Y. The Astros will place an innings limit on an arm that already has thrown 106 1/3 innings this year.