I was looking online and found that the preliminary bouts for the Strikeforce: Diaz vs Cyborg card and Strikeforce and M-1 Global: Fedor vs Silva card have a couple fights and fighters to look out for.
The Strikeforce: Diaz vs Cyborg card has these preliminary bouts:
Nate Coy vs. Nate Moore
Isaiah Hill vs. Bobby Stack
Ron Keslar vs. Eric Lawson
Germaine de Randamie vs. Stephanie Webber
Lucas Gamaza vs. James Terry
Jenna Castillo vs. Charlene Gellner
Anthony Dariano vs. Alan Perez
Niko Jackson vs. Ricky Jackson
Sam Bracamonte vs. Armin Safiari
There are two Womens MMA bouts on these prelims, but one to look out for is Germaine de Randamie vs. Stephanie Webber. Considering the dearth of female talent out there, any additional female fighters with potential is welcome. Germaine de Randamie had a kickboxing record of 48-0 before making the transition to MMA where she has a 1-1 MMA record, and Stephanie Webber trains under UFC Welterweight Dennis Hallman. Nathan Coy vs Nate Moore is also intriguing. Nathan Coy is a Team Quest fighter who did very well against Welterweight prospect Tyron Woodley, and he has notable wins over UFC Welterweights Mike Pierce and Rick Story. Nate Moore is a prospect who beat Louis Taylor on the Strikeforce: Fedor vs Rogers card and fights out of AKA.
For the Fedor vs Silva card, these prelim fights are rumored so far:
Marc Stevens vs. John Cholish
Josh LaBerge vs. Anthony Leone
Jason McLean vs. Kevin Roddy
Marc Stevens is the TUF alum who kept getting guillotined on TUF 12. Anthony Leone has fought in the WEC and Bellator, and Josh LaBerge fought in Bellator as well. McLean is a prospect who has notable wins over Ken Stone and Jimmie Rivera, and Roddy trains in Kurt Pellegrino's fight team.
From a business and financial standpoint, I understand that airing the prelims even if there is extra time for them don't really help Strikeforce very much, if at all. Also, there are local fighters and even amateur bouts that will probably look sloppy. However, there are legitimate prospects in these prelim bouts (and those are the only ones that I'd like to see), and for me personally, I would like to see what these prospects bring to the table.