BALTIMORE -- The Blue Jays announced on Thursday that they have signed right-hander Alek Manoah, their first-round pick in last week's Draft. His bonus of $4,547,500 (full pick value), a source confirmed, is the largest in team history for an amateur, (exceeding Adeiny Hechavarria's $4 million in 2010).

Manoah, the No. 11 overall pick, impressed the Blue Jays with not only the way he pitched in his junior season at West Virginia, but also his performance in the Cape Cod League last summer. The 6-foot-6, 260-pound righty features a power fastball and a hard slider, along with a changeup that he didn’t use as much this past season with the Mountaineers.

• 10 things to know about Alek Manoah

“We really love what Alek brings to the table in his now stuff, but do see room for him to continue to develop and to continue to improve," director of amateur scouting Steve Sanders said when Toronto drafted Manoah. "He’s got a really well-rounded three-pitch mix that’s going to play at the next level.”

At West VIrginia, Manoah went 9-4 with a 2.08 ERA in 108 1/3 innings over 16 starts at West Virginia this season, racking up 144 strikeouts to just 27 walks.

The Blue Jays also announced the signing of five additional amateurs on Thursday, including outfielder Will Robertson (fourth round), shortstop Glenn Santiago (10th round), first baseman Nick Neal (11th round), right-handed pitcher Jackxarel Lebron (16th round) and non-drafted free agent right-hander Alex Nolan.