Orton will be challenged to make next year's roster.
*General manager Sam Presti repeatedly has said he has no intention of exercising the amnesty clause on starting center Kendrick Perkins, which means Perk remains entrenched.
*Like Orton, Hasheem Thabeet has a non-guaranteed contract the next two seasons, but the 7-foot-3 Thabeet is clearly ahead of Orton.
*OKC has the 12th overall pick in next month's draft and could be looking closely at 7-footers Alex Len of Maryland, Cody Zeller of Indiana, Mason Plumlee of Duke or Steven Adams of Pittsburgh.
The Thunder initially got down to its final 15-man roster last season by waiving Orton at the end of training camp, but brought Orton back four days later after trading James Harden, Daequan Cook, Cole Aldrich and Lazar Hayward to the Houston Rockets in exchange for Kevin Martin, Jeremy Lamb and three future draft picks.
Depending on whatever maneuvering Presti comes up with next fall, Orton could be in a similar situation to last October.