After weeks of build-up, the Rays shipped lefty Matt Moore to the Giants at the trade deadline for a package that included young infield prospect Lucius Fox. As it turns out, per Marc Topkin of the Tampa Bay Times, Fox was dinged up at the time of the trade — which may lead Tampa Bay to seek added compensation from their trade partner.

The 19-year-old is said to have been playing through a bruised foot that was not disclosed to the Rays. While not a significant problem, it may prevent Fox from returning to action before the end of the minor league campaign. That wouldn’t seem to be a major long-term issue, but could take away some valuable developmental opportunities heading into the offseason.

The other two pieces of the pact — infielder Matt Duffy and minor league righty Michael Santos — were both on the DL at the time of the deal, with known injuries. But Fox’s malady was apparently not accounted for in striking the agreement.

It’s important to note that there’s no suggestion that Fox would be sent back to the Giants, who only signed him last summer; to the contrary, Topkin says that’s not on the table. For the Rays to achieve any recompense, they’ll have to “work through MLB,” according to the report.

Fox, a switch-hitting Bahamian shortstop, has not been overly impressive in game action in his brief professional career. He owns only a .207/.305/.277 slash over 331 plate appearances in the Sally League. That didn’t stop the Rays from ascribing rather significant value to him, though, and he certainly comes with an impressive prospect pedigree after receiving a $6MM bonus last year as an amateur.