Blue Jays trade deadline primer: Offensive boost needed for stretch run

Ross Atkins and Mark Shapiro will be busy ahead of Tuesday's trade deadline. (Cole Burston/Getty Images)The Toronto Blue Jays enter the trade deadline as a solid team likely headed for the playoffs, which makes them an obvious candidate for an upgrade or two.

What the Blue Jays lack is obvious holes.

Alek Manoah coming back from the minors and the possible return of Hyun-jin Ryu creates a little uncertainty in the rotation, but they have enough to get through a playoff series. The bullpen looks stronger than it has in recent years in light of recent moves. Although the team's lineup has been underwhelming when it comes to scoring runs, its 109 wRC+ ranks seventh in the majors, suggesting it…