The East Valley Tribune reported that Hernandez will make his Diamondbacks' debut when he starts on Friday against the Florida Marlins. The right-hander was traded by the Washington Nationals to the Diamondbacks on Monday for a pair of minor league pitchers. (Updated 8/10/2006) Analysis: Hernandez, 31, is 9-8 this season with a career-high 5.34 ERA in 24 starts. He has been hampered by a sore knee for most of the season but had a strong outing Sunday, allowing two runs over seven innings at San Diego.