The Glendale News-Press scored the fight 29-28 for Darabedyan, but every round was razor thin.
Darabedyan (9-4) showcased his stellar overall game, particularly in the early going of the fight, but for the most part seemed to lack the killer instinct and aggression that has characterized much of his career.
Straus (13-3), a late replacement for Darabedyan's original opponent Markus Hicks, won his ninth straight bout by doing his share with takedowns, which was expected, and holding his own on the feet against Darabedyan, which was not expected.
The opening round was the most action-packed of the three with an array of offense featured by both.
Straus shot in early for a takedown, but Darabedyan sprawled well. The two squared off standing, throwing punches and kicks to the head, body and legs.
They also clinched against the cage, reversing positions, throwing inside punches and knees to the thighs. Straus landed the first good punch with a right, but Darabedyan didn't let it affect him and worked the two against the cage.
He would also work a trip for a takedown and then, during a clinch against the cage, he dropped down for the most telling sequence of the stanza, applying a leg lock and going for a submission. Straus worked free and spun out and into top position. Darabedyan would finish the round in side control, delivering knees to the body.
The second round slowed dramatically, but was still very nip and tuck.
Darabedyan easily avoided some early strikes and then stopped a takedown with a guillotine attempt that never appeared too tight, but he managed to land some clean shots while keeping Straus at bay with the hold. Straus would land a solid jab later on, but for the most part Darabedyan pushed the pace of the round.