The 13th edition of the Indian Premier League begins on September 19.
Harris, who previously held the same post in Kings XI Punjab's (KXIP) support staff, joins Delhi now as they eye their maiden title in the league's history.
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The 40-year-old played 27 Tests, 21 ODIs, 3 T20Is and 37 IPL matches till 2013. He is replacing fellow Australian James Hopes as DC's bowling coach. Hopes, it is confirmed, won't be able to travel for IPL 2020 due to personal reasons.
“I am delighted to be back in the IPL," Harris was quoted as saying in a press release. “This is a huge opportunity for me to contribute to the franchise’s ambitions of lifting the coveted IPL trophy."
“The Delhi Capitals side has an impressive bowling line up, and I can’t wait to start working with them all,” he added.