Former world number one Serena Williams has pulled out of next week's Italian Open in Rome, organisers confirmed on Wednesday.
Last week the 23-time Grand Slam winner pulled out of the Madrid WTA event due to a fever. The American tennis star made her comeback in February, six months after giving birth to baby Olympia, when she competed at Indian Wells and Miami, but has admitted she is struggling to get fully fit. A statement on the tournament's Twitter feed read: "We are so sad to announce that @serenawilliams, a 4-time Champion in Rome, has withdrawn from ibi18.