I recently got a PB over 5k of 18:45. My time was actually (on my watch) 00:18:45:98. A fellow runner reckons I should round that up to 18:46, but I say no and have awarded myself a time of 18:45.
What would you do, do you round up or ignore the thousandths on your watch ?
p.s. the 'advice' came from a runner I beat