Complex sentence: In November 1998 Harper made his Test match debut when appointed to stand in the 2nd Ashes Test at the WACA alongside umpire Venkat, also standing in the 4th test of that Ashes series at the MCG.
Split into simpler sentences: In November 1998 Harper made his Test match debut when appointed to stand in the 2nd Ashes Test at the WACA alongside umpire Venkat. He also stood in the 4th test of that Ashes series at the MCG.