When to Call a Time-out?

 

I am among those who failed to take advantage of the rule.  I feel I could have benefited from a timeout to ensure I was ready and decisive on serve strategy on my serve at 9-9 in the 5th game of the match several times.  I underperformed by not planning and executing my serve and 3rd ball attack chances well enough, which led to duece and eventually losses each time.  I probably could have prepared a much better serve and anticipation of a third ball to win both points, instead of one.