Guangzhou R&amp;F striker Aaron Samuel was unhappy with the 4 - 2 defeat suffered at the hands of Shandong Luneng in the Chinese Super League on Sunday afternoon.<br /><br />And the scoreline would have been more flattering to the visitors if the Nigeria international had not converted a spot kick in the 76th minute.<br /><br />&ldquo;I am the designated penalty taker for my team and I was happy to score,&rdquo;&nbsp; said Aaron Samuel to <b>allnigeriasoccer.com</b>.<br /><br />&ldquo;We thought we could earn at least a point from the game but our defense lost concentration towards the end of the game.<br /><br />&ldquo;We have played two games in a space of three days and this contributed to our tiredness.&rdquo; <br /><br />The 21 - year - old Aaron Samuel has averaged exactly 0.5 goals per game since the start of this season.<br />