Complex sentence: After retired tennis star Andre Agassi read "The Tender Bar", he asked Moehringer to collaborate with him on his own memoir; the result, "Open", was published in 2009.
Split into simpler sentences: After retired tennis star Andre Agassi read "The Tender Bar", he asked Moehringer to collaborate with him on his own memoir. The resulting book, which was titled "Open", was published in 2009.