R. Sakamoto has been inconsistent recently, going 3–2 over the last five matches. Form is mixed — DS ranging from -5.5 to 12.5, with at least one match where R. Sakamoto was clearly outplayed. The serve has been a concern — averaging only 6.3/10, leaving R. Sakamoto vulnerable on second serve and facing frequent return pressure. Break point efficiency is a red flag — R. Sakamoto has been losing the important points, with a BP efficiency of -24 over recent matches.