If the first baseman is making a play on a batted ball it is the responsibility of the runner to yield. If there is contact the runner may be declared out.
If the first baseman is fielding a thrown...
Well, there aren't really. The line to the left is the first base line and the line to the right is the 'out of bounds' line. These two lines form the 'restraining box' and when a runner runs to...
The most basic thing to do is wash your face morning and night with a gentle, non-dying soap. You can also find an acne treatment specific to your needs at stores like Target or Wal-Mart.