Vuelta a Costa Rica, Stage 1
On the site of the Federacion Costorricense de Ciclismo the code of number 10 VARELA Jewinson is CRC19951006 (here).
This is in fact the code of VARELA ZUÑIGA Leandro, in the CQ database under id 25135.
With the same code one also finds on internet results of a VARELA ZUÑIGA Yewinson.
The code given on the UCI site, CRC19910606, does nowhere appear in results.
Assume his full name is VARELA ZUÑIGA Yewinson Leandro, code CRC19951006.