Kei Nishikori on Tuesday heaped praise on his "amazing" countryman Hideki Matsuyama for reaching No. 2 in the PGA Tour rankings, the best ever position for a Japanese male golfer.

But while he offered major praise, Nishikori hinted that he feels Matsuyama is not getting the recognition he deserves at home, saying many world-class athletes receive more love outside of their homeland.

"All I have to say is that he's amazing," Nishikori said of Matsuyama, who moved to his career-best ranking after finishing tied for second at the U.S. Open on Sunday in Erin, Wisconsin.