Desperately unlucky not to score in the last two games, however issues are the same as with Origi and Sturridge. These no.9s are simply not at their full capacity unless they have a partner upfront. None of them apart from Firmino can quite lead the line in a proper way and don't get nearly enough chances to score simply because they miss somebody close to them to drag defenders away and create space for them.
They're too isolated at times as people don't get close enough to support them. It always reminds of games where we've seen Sturridge and Origi upfront together and almost always they were both good in those games.
With all the games we've seen under Klopp these out-and-out no.9s struggle in a 433 to play their best football, they either need a no.10 behind them or a strike partner.