| Date | Time | Headline |
|---|
| Tue Mar 31 2015 | 17:10 | Hendrickson announced retirement Tuesday |
| Mon Mar 16 2015 | 12:58 | Hendrickson released by Orioles |
| Tue Jun 24 2014 | 15:37 | Hendrickson throws for Orioles on Tuesday |
| Sat Mar 29 2014 | 11:30 | Hendrickson signs with independent team |
| Sat Mar 30 2013 | 15:15 | Orioles reassign Mark Hendrickson to Triple-A |
| Mon Feb 4 2013 | 12:11 | O's finalize minors deal with Hendrickson |
| Sat Feb 2 2013 | 15:12 | Orioles to announce Hendrickson deal soon |
| Tue Jan 22 2013 | 14:32 | O's to offer minors deal to LHP Hendrickson |
| Wed Jan 16 2013 | 16:37 | Hendrickson throws at Orioles camp |
| Sat Jan 12 2013 | 12:52 | Orioles to tryout LHP Mark Hendrickson |
| Wed Sep 14 2011 | 09:41 | Orioles release LHP Mark Hendrickson |
| Tue Sep 6 2011 | 23:16 | Orioles DFA Mark Hendrickson |
| Tue Aug 30 2011 | 13:20 | O's DFA Mark Hendrickson |
| Sun Aug 28 2011 | 10:47 | Mark Hendrickson recalled |
| Wed Aug 3 2011 | 16:44 | O's option Hendrickson to AAA |
| Sat Jul 9 2011 | 15:57 | Mark Hendrickson recalled |
| Sat Jul 9 2011 | 08:21 | Mark Hendrickson to be called up |
| Thu Mar 31 2011 | 09:32 | O's send Hendrickson to minors |
| Mon Jan 31 2011 | 13:08 | O's re-up with Hendrickson on minors deal |
| Fri Jan 28 2011 | 21:57 | Orioles have offered Hendrickson minors deal |
