The Australian Open has already presented us as viewers with phenomenal matches and quite surprising results.
Many upsets have taken place, and some shocking early-round exits have left us to question the sport's athletes.
Surely, these players have deeply impacted the game already with their talents and contributions, but perhaps it is nearly time for them to hang up their rackets and put a halt to their prize-money earnings.
Here are five players who should consider retirement this year.
I apologize for the lack of noise in this clip.
Playing points like these are going to continue to take a toll on the Australian's body and old tennis age.
He is still a great player and can win matches here and there, but his days at No. 1—and perhaps the Top-100—are long gone.
I have never seen such a record as this, but it is by no means a commendable one.
Baghdatis got so angry during his match against Stanislas Wawrinka that he did this, and it is never acceptable to display such poor sportsmanship and a temper of this magnitude.
He should give the entire world of tennis an apology, especially his young fans that seek to emulate him.
The 31-year-old tennis icon has been a cornerstone to our sport, but she has been out of action for months now. She withdrew from this event, citing an autoimmune disease that caused her to take some time off in the past as well.
Hopefully she recovers from her health problem, but she seems to be ready to stop playing competitively for good.
About to turn 33 years old, the American veteran has to wonder how much he has left in the tank.
He is still playing well and plans on playing until his child is old enough to be able to see him play competitively. After that, he is going to face the facts and probably stick to strictly doubles or exhibition matches.
Entering the Top 10 for the first time in his career in the past two years, Melzer is clearly headed on his way out.
Losing in the first round in Melbourne to Ivo Karlovic in straight sets, it is questionable what path the Austrian plans on taking in the future.
He should continue to play doubles with his partner, Philipp Petzschner, though, because they have proven to be a consistent Top 10 duo in recent years.