Tee markers on the Rancho Bernardo course number II. My neighborhood is surrounded by two golf courses which are part of the Rancho Bernardo Inn. (San Diego has over 125 golf courses!) We are well into Spring, it will probably never rain again, and it is time to enjoy the great outdoors.
The "white" thing is on the left side of the tee... marking the line and edge of where to hit. The yellow thing, that looks like real golf ball, is actually another part of the tee marker!