With RB having been relaunched this year under new management, owner Red Bull had hoped the team would deliver progress on track to fight nearer the front of the field.
But a difficult start to the campaign, with RB fighting in the second half of the pack, has left both Tsunoda and Ricciardo unable to finish in the top 10 so far.
And, with both having come into the year hoping to put themselves in the frame to land a Red Bull seat for 2025, the disappointment is clear to see.
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Marko in particular thinks that, with the position RB is in right now, there is no room for either driver to let slip opportunities that are handed to them.
Speaking to Sky Germany, Marko said: “There's a lot at stake for [Tsunoda and Ricciardo]. Both might be hoping for a seat at Red Bull, and one should be well ahead of the other.
“So far Ricciardo is a bit behind. But let's put it this way: Tsunoda's qualifying speed is OK. But in the race, both are too slow.”
Source: Autosport