AUGUSTA, Georgia, April ⁠6 (Reuters) - World number seven Collin Morikawa said on Monday he is taking things "day ⁠by day" after a recent back injury that threatens to jeopardise his chances ‌at this week's Masters.

The two-time major winner has not played since pulling out of The Players Championship in mid-March after one hole due to back spasms. He then withdrew from last week's Masters tune-up in San ​Antonio with a back injury.