Billy Horschel shares lead with Chris Kirk after round one of Tour Championship . Horschel 's wife is due to give birth to their first child this month . Hide Caption 1 of 9 Photos:Tiger Woods: From highs to lows Woods celebrates winning the BMW PGA Championship in April at Valhalla Golf Club outside Chicago. Horschel won last week 's BMW Championship and was joint runner-up in the second of the four playoff events , so his hopes are high that he can secure his family 's financial future this weekend . He says he will keep playing if his wife goes into labor during tournament .
Billy Horschel shares lead with Chris Kirk after round one of Tour Championship . Horschel 's wife is due to give birth to their first child this month . Hide Caption 1 of 9 Photos:Tiger Woods: From highs to lows Woods celebrates winning the BMW PGA Championship in April at Valhalla Golf Club outside Chicago. He says he will keep playing if his wife goes into labor during tournament .